High Cholesterol Rate Dropping in America, Says CDC

When it comes to America's heart health, it's not all bad news.

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'The Giving Way to Happiness' (US, 2015): Book Excerpt

In this excerpt from her book, Jenny Santi reveals that philanthropy has its rewards.

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The Science Behind the Power of Giving (Op-Ed)

It feels good to give, but why?

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'Last-Resort' Antibiotics Fail Against New Superbugs

A new gene in a strain of Escherichia coli (E. coli) not only protects the bacteria against last-defense antibiotics, but is easily shared among microbial species.

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Supersize Me: Atom Smasher Reaches Highest Energies Yet

The Large Hadron Collider began smashing heavy lead nuclei into each other at the highest energies yet, an experiment that could reveal conditions soon after the Big Bang.

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'Sim' Culture: Charting Bursts of Human Inspiration

Why does culture sometimes evolve via sudden bursts of innovation?

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Amazon Unveils Its Delivery Drone of the Future

The company says that delivery drones could be as "normal" as mail trucks someday.

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Hawaii's Majestic Mauna Kea Stars in '3D' Photo from Space

Mauna Kea, Hawaii's tallest volcano, is circled by clouds in a photo taken by an International Space Station astronaut on Nov. 1, 2015.

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The Paris Climate Meeting: A Quick Guide

The Paris climate meetings begin on Monday. But what exactly are they?

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CERN in a Shoebox? Tiny Particle Accelerators Are Coming

Lasers could enable scientists to develop tiny, shoebox-size accelerators.

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Angry Birds? Seagulls Implicated in Baby-Whale Deaths

At least 626 baby right whales have died off the coast of Argentina since 2003, and no one knows why.

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Is Digital Hoarding a Mental Disorder (And Do You Have It)?

Digital hoarding could one day be a diagnosable disease.

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Bizarre Ancient Sea Creature Was Well-Armed for Feeding

A bizarre three-armed ancient creature probably filtered food particles from the water in order to survive. The animal looked nothing like anything alive on Earth today, the researchers said.

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In Photos: Tracking Humpback Whales in the South Pacific Ocean

Check out amazing photos of humpback whales breaching the ocean surface as scientists monitor their lengthy sea travels.

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Humpback Whales Make Migration Pit Stops at Underwater Mountains

During lengthy migrations, humpback whales in the South Pacific stop over at seamounts that rise hundreds of feet from the seafloor. Scientists suspect the undersea mountains may serve multiple important roles for the whales.

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Ancient 'Mud Dragon' Worm Had Spiky Coat of Armor

A recently discovered fossilized worm from 535 million years ago had an armored body, a mouth ringed with teeth and rows of thornlike spines on its flanks.

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Ancient 'Ironman' Worm Was 'Armed' and Armored | Video

With circles of spiky teeth, articulated armored plates and sharp spines, the 2mm-long Eokinorhynchus rarus, lived in China 535 million years ago. It’s related to modern insects, spiders, crustaceans and roundworms.

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Plastics Recycling is Working: Here's Why (Op-Ed)

Despite the naysayers, plastics recycling is actually profitable, and widespread.

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Progesterone May Not Lower Risk of Repeated Miscarriage

Progesterone supplements do not lower the risk of miscarriage in women who have suffered from repeated miscarriages in the past, a new study finds.

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Eyes May Offer Window into Cardiovascular Disease

Sometimes, the only sign of a serious cardiovascular condition may be vision problems, a new case report shows.

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Infections with Mosquito-Borne Chikungunya Virus Can Cause Brain Inflammation, Death

The chikungunya virus usually causes fever and severe pain, but it may also lead to brain inflammation and even death, a new study shows.

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Buried or Open? Ancient Eggshells Reveal Dinosaur Nesting Behaviors

The fragile remains of 150-million-year-old eggshells are helping researchers figure out what kinds of nests dinosaurs created for their eggs, according to a new study.

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Liberia Suffers New Ebola Death, Despite Being 'Ebola-Free'

The death of a Liberian teen from Ebola raises a lot of questions.

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Cobwebs Hold Genetic Secrets About Spiders and Their Prey

An empty spider web isn't a mystery; it's a clue.

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In Photos: Worm Grows Heads and Brains of Other Species

A flatworm can regenerate its head and brain in the shape of those in other planarian species, researchers have found. Here are images of the bizarre creatures and the experiment that revealed this odd shape-changing ability.

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Ebola-Related Eye Problems Hit Second US Survivor

An American doctor who survived Ebola developed serious eye problems shortly after he recovered from the disease, making him the second U.S. Ebola survivor to have eye problems, according to a new report.

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Mars May Become a Ringed Planet Someday

Mars may one day have rings like Saturn's, if the Red Planet manages to completely crush its innermost moon, Phobos.

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Dark Matter 'Hairs' May Surround Earth

Computer simulations suggest that filaments of invisible dark matter form long "hairs" when they go through planets such as Earth.

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'Spooky Action' Heats Up: Atoms Entangled at Room Temperature

Physicists have coupled together thousands of atoms at room temperature, wherein actions on one of the atoms can affect its partners across the cosmos. Previously, these atoms could be paired only at temperatures cold enough to liquefy helium.

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7-Million-Year-Old Fossils Show How the Giraffe Got Its Long Neck

For years, there has been scant fossil evidence showing how the giraffe evolved to have such a long neck. But now, the remains of a 7-million-year-old creature with a shorter neck provides proof that the giraffe's iconic feature evolved in stages.

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Best Apps for Pain Management

These apps can help users track and manage their chronic pain.

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'Inside Einstein's Mind': New TV Show Explores Journey to Relativity

On the 100th anniversary of what is arguably Einstein's greatest accomplishment — the publication of his theory of general relativity — PBS is celebrating his work and giving viewers insights into the man behind the theory.

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A Pill for ISIS Supersoldiers? Not So Fast

Reports of a potent pill powering ISIS fighters have some on high alert. Here's what drug experts say.

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Costco Chicken Salad Linked to E. Coli Outbreak in 7 States

An outbreak of E. coli bacteria tied to chicken salad sold at Costco has sickened 19 people in seven states, according to the Centers for Disease Control and Prevention.

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7 Tips to Make Thanksgiving More Enjoyable for People with GERD

Turkey Day can be challenging for people with acid reflux, or GERD. Here are some tips that may help.

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What Triggered the Big Bang? It's Complicated (Op-Ed)

What really happened at the start of the Big Bang?

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Franken Flatworms Grow Heads and Brains of Other Species

Without altering a single DNA molecule, researchers engineered a flatworm to grow the heads of different species.

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Slipping into a Food Coma? Blame Your Gut Microbes

Researchers found chemical clues hinting that when certain bacteria in the belly have had enough, they tell the brain that it's time to stop eating.

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Google Doodle Honors Human Ancestor 'Lucy'

Google created a doodle today to honor the 41st anniversary of the discovery of 'Lucy,' the famous upright-walking Australopithecus ancestor to modern-day humans.

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PMS May Warn of High Blood Pressure in Future

The headaches, low-energy feelings and other signs of PMS may signal an important health risk for women.

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Daily Dose of Walnuts Linked to Health Improvements

Eating walnuts might improve your metabolic health, a new study suggests.

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Light-Bending Microchip Could Fire Up Quantum Computers

For the first time, scientists have achieved infinite speeds on a microchip. The light-warping technology behind this innovation could lead to new light-based microchips and help enable powerful quantum computers, researchers said.

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Cause of Mysterious Snake Die-Off Found

The culprit behind a disease that causes raised blisters, crusted-over eyes and snouts, discolored skin patches, and ultimately death in several snake species has been identified.

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High-Flying Glider Will Probe Layers of Earth's Atmosphere

Not many people can say they have traveled to the edge of space, but a team of scientists and engineers is daring to join those ranks.

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More Infant Deaths Blamed on Crib Bumpers

Crib bumpers cause deaths and should be banned, researchers say.

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Why Menstruation Remains a Medical Mystery

Menstruation happens monthly, but is studied rarely.

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Solar Neutrinos Caught By Chemist In Underground Experiment | Video

Brookhaven National Laboratory chemist Ray Davis built an experiment to detect neutrinos coming from the Sun. He placed his detector nearly a mile underground in the Homestake gold mine in South Dakota.

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Round for Round: Women's Drinking Rates Catching Up to Men's

Men are still the big drinkers in the United States, but the gender gap is closing.

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Goodbye Nola: Only 3 Northern White Rhinos Remain in the World

One of four northern white rhinoceros left on Earth died yesterday (Nov. 22), leaving only three surviving members of the critically endangered species.

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Lonely? You May Be More Likely to Get Sick

Lonely people may have worse health than those who are less socially isolated. New research points to why.

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Some of Earth’s Rocky Plates Are Gooey on the Inside

At least some of the plates squished beneath the ocean floor are stretchier than previously thought, which could force geologists to rethink a process known as flat-slab subduction.

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Beetles Speed-Grow Their Built-In Bifocal Eyes

A diving beetle's complex eye parts transform rapidly as the larvae molt.

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Brain Connections Predict How Well You Can Pay Attention

Although the ability to sustain attention varies widely from person to person, characterizing these individual differences has been difficult.

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11 Outdoor Gifts for Exploring Our Amazing Planet

From hand warmers to ways to document it all, here are some of the best gifts for the adventure seeker in your life.

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Photos: Treasure Trove of Unopened 17th-Century Letters

A trunk containing about 2,600 undelivered letters—600 of them unopened — was recently rediscovered. A team of researchers is now collaborating on a new project to study the rare archive, using X-rays to virtually open the sealed notes.

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1,700-Year-Old Ring Depicts Nude Cupid, the Homewrecking God

An intricately carved gold ring containing a stone engraved with an image of a teenage Cupid, shown completely nude while holding a torch, was discovered near a village in the U.K. Spiral designs and bead-shaped spheres decorate the ring.

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How Earth's Hidden Magma Ocean Formed

The rotation of the newborn Earth may have helped to control the evolution of a giant magma ocean sitting on top of its core, researchers say. Knowing how Earth's magma oceans evolved over time could shed light on when the plate tectonics began.

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Charitable Acts Can Lead to Bad Behavior

After donating to the food pantry or toy drive this holiday season, watch yourself. Some new research suggests donations might make you temporarily more Grinch-y.

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Attention Disorder Drugs May Harm Kids' Sleep

Kids who take medications for ADHD may develop sleep problems, new research finds.

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Devils Tower: See Photos of Wyoming's Unique Rock Formation

In the Fourche River Valley in northeastern Wyoming, an unmistakeable and unique geological wonder arises from the desolate, high plains landscape.

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Many Small Microaggressions Add Up to Something Big

Often microaggressions take the form of unconsciously delivered instances of failing to acknowledge or making light of the experiences of others from different cultures, traditions, races – and they’re easily justified or ignored.

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'The Good Dinosaur': Could Humans and Dinos Coexist?

What if the dinosaur-killing asteroid never slammed into Earth and the paleo-beasts weren't vanquished from our planet 66 million years ago? That's the hypothetical that forms the basis of Pixar's "The Good Dinosaur," set to hit theaters on Nov. 25.

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Concussions: Signs, Symptoms & Treatment

A concussion is a traumatic brain injury (TBI) caused by the brain violently bouncing or twisting inside of the skull.

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A Magic Moment: The Milky Way from Yellowstone National Park (Photo)

This image of the Milky Way from the edge of the Grand Prismatic Spring in the Midway Geyser Basin in Yellowstone on June 27, 2015.

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Could Liquid Lakes Form on Mars Today?

A sudden spurt of liquid water on Mars could potentially create deep lakes today, new research suggests.

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Why Sleep? Why Dream?

When you sleep, where does your consciousness go?

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The Future of Driverless Vehicles (Roundtable)

You may not get along all that well with other drivers on the road, but eventually, your car might.

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Expectant Moms: Coffee Won't Harm Kids' IQ

It's OK for pregnant moms to sip their morning mug.

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Cyborg Roses Wired with Self-Growing Circuits

Scientists have demonstrated that it is possible to embed electronic circuits in living plants, which could one day be used as sensors to monitor plant health.

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A Prehistoric Murder Mystery: Earth's Worst Mass Extinctions

They were the worst of times. (Really, the worst.)

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In Photos: Fossil Forest Unearthed in the Arctic

The 13-foot-tall trees were tightly packed into this 385-million-year-old forest. Here's a look at the fossilized remains of the sprawling ecosystem.

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Giant Bling: World's Second-Largest Diamond Unearthed

The giant rock weighs nearly half a pound.

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Fossilized Tropical Forest Found — in Arctic Norway

An ancient fossil forest in Norway with tropical origins is one of the earliest forests to appear on Earth.

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'Letterlocked' Trove: X-Rays to Peer into Sealed 17th-Century Notes

A trunk containing about 2,600 undelivered letters — 600 of them unopened — was recently rediscovered. Researchers are now collaborating on a new project to study the rare archive.

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Einstein's Unfinished Dream: Marrying Relativity to the Quantum World

How can Einstein's theories meld with the odd observations of the quantum world?

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Parents Don't Have all the Answers, and That's OK (Op-Ed)

Anyone who has spent some time with young children know that they ask “why?” – a lot.

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For Severe Weather, 'Is This Climate Change?' Is the Wrong Question (Op-Ed)

Blaming severe storms on climate change? Not so fast.

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Food Labels: Definition of Natural & Organic

"Natural" and "organic" are common on food labels, but the terms can be confusing. There are, however, specific definitions for each term.

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Carbon Falling, Economies Rising: Expectations for the Paris Climate Summit (Op-Ed)

In tackling climate change, COP21 may — finally — spawn both environmental and economic changes.

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Abraham Lincoln Was a Science Champion, Astrophysicist Neil deGrasse Tyson Says

Abraham Lincoln is best-known for abolishing slavery and keeping the United States together through the Civil War, but he also helped the country become the scientific and engineering powerhouse we know today.

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Speaking More Than One Language Eases Stroke Recovery

People who speak more than one language seem to fare better after a stroke, a new study finds.

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Pick Up the Pace: Walking Speed Linked with Heart Health in Older Adults

Walking is good, but for older adults, walking faster may be better.

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Weird Sea Mollusk Sports Hundreds of Eyes Made of Armor

A marine mollusk built like a tiny tank can see with hundreds of eyes made of the same material as its armor. Scientists tested its vision and found that the chiton could use its armored eyes to see a fish from more than 6 feet away.

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Antarctica Is Gaining Ice, So Why Is the Earth Still Warming?

Recent NASA research shows that Antarctica seems to be gaining ice, but this finding has been met with skepticism. The research also doesn't support the assumption that climate change is ending; the story is more complicated than that.

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Getting a Head: 'Superduck' Dinosaur Shows How Dino Crests Evolved

A subtle skull slope identifies a new dinosaur species as a direct link between a predecessor with a flat skull and later relatives with dramatic paddle-shaped crests.

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Photos: Digging Up "Superduck," a New Hadrosaur

A subtle skull slope identifies a new dinosaur species as a direct link between a predecessor with a flat skull and later relatives with dramatic paddle-shaped crests.

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Pigeons Learn to Spot Breast Cancer

Go ahead and call a pigeon a birdbrain. Just don’t challenge it to the tedious game of "Categorizing Tumors as Cancerous or Benign." The pigeon may well win.

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Songbirds' Invisible Tap Dance Makes Good Vibrations

Fancy footwork may woo mates for blue-capped cordon-bleus, songbirds that can tap dance faster than the eye can see.

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Songbirds Rap, Tap & Sing For Sex | Video

There’s a lot of love song and dance going on above our heads. Video (incl. slo-mo) of Blue-Capped Cordon-Bleu birds show the musical mating rituals of males and females.

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The Science of Sugar: Is Corn Syrup the Same?

Do high-fructose corn syrup and sugar have the same effects on human health? A lawsuit is now considering the question. Here's what the science says.

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Jet-Propelled 3D-Printed Drone Claims Speed Record

A new jet-powered drone might be the most complex flying machine ever built using 3D printing.

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'Flying' Tadpoles & Fleeing Fish Win Prestigious Photo Contest

Schools of aquatic animals won big during this year's Royal Society photo competition.

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In Photos: Baby Animals Win Prestigious Photo Contest

The winning photos from the first-ever Royal Society Publishing Photography competition.

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This Digging, Eating Worm Is Your Cousin | Video

Genes linked to Acorn worms’ (Saccoglossus kowalevskii) breathing and feeding apparatus are present in humans, and may control parts of the same systems. Our common ancestor lived about 1 billion years ago.

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Low-Fat Diet: Facts, Benefits & Risks

Diets that dramatically limit the grams of fat a person eats may be useful for short-term weight loss, but they may not be healthy in the long-term, experts say.

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U.S. Agencies Agree: October Was Crazy Warm

NOAA and NASA said October had the biggest temperature departure of any month in 100-plus years.

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Skeleton of Burnt 'Witch Girl' Found in Italy

The harsh burial of the teenage girl suggest she was seen as a danger even when dead.

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Hobbits Were a Separate Species, Ancient Chompers Show

An ancient, 3-foot-tall (0.9 meters) human whose diminutive stature has earned it the nickname "hobbit" is a unique species and not a Homo sapien with a minitiarizing disorder, scientists who analyzed the specimen's teeth said.

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Not So Precious: Eyeless 'Smeagol' Arachnid Discovered in Underground Lair

In a deep, dank cave in Brazil, a pale, blind creature lurks, never venturing out to feel the sun.

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Researchers Grow Vocal Cord Tissue That Can 'Talk'

People who have lost their voice due to vocal cord tissue damage could some day be helped by a new advance: Lab-grown vocal tissue.

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You Share 70% of Your Genes with This Slimy Marine Worm

What do you have in common with a filter-feeding, deep-sea worm? On a genetic level, it's a lot more than you might suspect.

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Bright Light Therapy Can Ease Depression Symptoms

For people with depression, "bright light therapy" might help, a new study suggests.

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No Fair! Children's Sense of Equality Is Shaped by Culture

Children across the world develop an aversion to getting less than others at a fairly young age, but only some children find it unfair if others get less than them.

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'X-Ray Vision' Tech Uses Radio Waves to 'See' Through Walls

"X-ray vision" that can track people's movements through walls using radio signals could be the future of smart homes, gaming and health care, researchers say.

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How to Flirt in Panda: Bears' Squeaks Decoded

Researchers at a conservation center in China say they have decoded 13 sounds made by pandas to seek mates, ask for food or show anxiousness.

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French Flags on Facebook: Does Social Media Support Really Matter?

Facebook's decision to create a French flag overlay after terrorism in Paris led to backlash. But does the social network really drive public opinion? And why do some people choose the overlay while others are averse to it?

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Guys Pig Out to Show Off for Women

in an effort to show off in front of women, guys seem to eat a whole lot more than when they're just out with the guys, scientists find. From an evolutionary perspective, this pigging out on pizza appears to be a form of showing off to attract a mate.

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Less Vino, Please: Italian Drinking Rates Drop

Italians may be known for their love of wine, but drinking rates in the country have actually dropped markedly in recent years. Here's why.

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College Rape Study Reveals Alcohol, Drug Use Pattern

Researchers are starting to better understand sexual assault on colleges campuses, and some of the risk factors that it may involve.

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Mediterranean Diet: Foods, Benefits & Risks

The Mediterranean diet focuses on eating foods that are as natural as possible, while limiting unhealthy fats and red meat. Many studies have shown that this type of diet can be very beneficial.

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Emoji Snags 'Word of the Year' (Here’s Why That Makes Sense)

The emoji called face with tears of joy, the official Oxford Dictionaries word of the year for 2015,may tap into the human need to use nonverbal cues to express emotions.

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Baby's New Leukemia Treatment Could Help Others with Cancer

A new technology that edits the genes within a cell was used recently to treat a baby with leukemia. The treatment may one day be used to treat other types of cancers, experts say.

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Pee To Feed The World: Urine Into Fertilizer | Video

Containing human waste and using it’s nutrients is a challenge. Nearly a thousand children die each day from illness related to poor sanitation and hygiene.

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Do Vitamin Supplements Work? Science Says Somewhat, Sometimes | Video

Do they cure colds? Prevent hair loss? Protect your heart? Mostly what they do is make supplement sellers wealthy - not make you and I more healthy. That said, certain added nutrition in pill form can be helpful, says the American Chemical Society.

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Charlie Sheen Has HIV: What It's Like to Live with the Virus

Charlie Sheen recently disclosed that he is HIV positive, but HIV infection isn't the death sentence it once was.

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4 Things to Know About That 'New' STD

A little-known sexually transmitted disease may actually be fairly common, according to a new study.

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Spooky Action Is Real: Bizarre Quantum Entanglement Confirmed in New Tests

Spooky action at a distance, the bizarre implication of quantum mechanics that so-rattled Einstein, is real, a series of new tests confirm.

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Charlie Sheen Reveals He Has HIV: What It's Like to Be HIV Positive

Charlie Sheen recently disclosed that he is HIV positive, but HIV infection isn't the death sentence it once was.

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Weird Mucus Parasites Are Actually Jellyfish

Teensy parasites called "mucus animals" are actually degenerated jellyfish that sport little stinging cells but no mouth or gut. The finding could expand scientists' definition of the animal kingdom, the researchers say.

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'RoboBees' with Laser Eyes Could Locate Disaster Victims

Mechanical eyes that shoot laser beams could one day help robot bees fly without crashing into obstacles, researchers say. These laser eyes could also one day help people control smartphones, wearable technology and other devices using only gestures.

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Open Wide! Dinosaurs' Jaw Stretch Linked to Feeding Habits

How far could T. rex's jaws stretch? A new study has answers about the breaking point for this dinosaur’s bite.

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Birth Control Lawsuit: What Happens When You Skip a Few Pills?

A company that allegedly mislabeled its birth control pills is facing a lawsuit. What really happens when you skip your pill for a few days?

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Coffee Drinkers, Perk Up: 1 to 5 Cups Daily May Reduce Risk of Early Death

People who drink moderate amounts of coffee daily may live longer than people who don't drink coffee, a new study finds.

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Pluto Goes Psychedelic in Brilliant New Photo

Pluto's the prettiest dwarf planet at the party in this new, brilliantly colored image recently released by NASA.

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1,700-Year-Old Mosaic Once Decorated Luxurious Villa Courtyard

Lions and tigers and birds, oh my!

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Mystery Extinct Cavemen Were More Diverse Than Neanderthals

A mysterious extinct branch of the human family tree that once interbred with modern humans was more genetically diverse than Neanderthals, a finding that suggests many of these extinct humans called Denisovans existed in what is now southern Siberia.

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UNESCO Celebrates 70th Anniversary with High-Tech Light Show

The organization's many-sided facade is about to become a giant digital photo album.

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In Photos: 1,700-Year-Old Mosaic Once Adorned Israeli Courtyard

Predators and prey bring an ancient tile floor to life.

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El Niño Expected to Strengthen, Bring Wild Weather Across US

This year's particularly strong El Niño is expected to get even stronger before it's done.

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Facial Transplants Move Forward with Most Extensive Operation Yet

A successful facial transplant advances the field.

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When Larvae Attack! Juvenile Beetle Grabs Mosquito Larva Lunch | Video

Swimming just below the water’s surface, a Sunburst diving beetle larva locates its target by visually "scanning” it with up-and-down head movements.

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Open Wide! T-Rex Jaw Could Reach Nearly 90° | Computer Model Animation

Carnivores such as the Tyrannosaures rex and Allosaurus fragilis could produce wide jaw gape, giving them the ability to to maximize devastation to their prey.

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Ancient Board Game Found in Looted China Tomb

Pieces from a mysterious board game that hasn't been played for 1,500 years were discovered in a heavily looted 2,300-year-old tomb near Qingzhou City in China.

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Photos: Ancient Tomb and Board Game Found in China

Archaeologists have discovered the remains of an ancient board game, including a decorated dice and tiles, that hasn't been played for 1,500 years.

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Laziness: Blame it on the Brain?

Perhaps you could care less, but newly spotted differences in how our brains work could explain why some people are apathetic and lazy. Scientists say motivation could be more about biology than attitude.

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Kids' Drug-Resistant Bacteria Blamed on Farm Antibiotic Use

Kids are developing infections that are hard to treat because the bacteria are resistant to the drugs commonly used in raising farm animals.

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House Cats Are as Big as Ping-Pong Tables (If You Count Their Hair)

Hair boosts the surface area of animals by 100 times the surface area of their skin alone.

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Animal Sex: How Giraffes Do It

Giraffe sex involves cocktail parties, statuelike stances, urination and instantaneous ejaculation.

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Google's New AI System Could Be 'Machine Learning' Breakthrough

Google's new "TensorFlow" system is the backbone of many of the company's core functions, ranging from "Smart Reply," which suggests up to three responses to emails, to speech recognition functions in the Google app.

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What Are Calories?

A calorie is a unit of energy. Counting calories is one way to monitor weight loss.

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Hoax Exposed: No, Earth Will Not Go Dark for 15 Days

There is no truth to the claim that the Earth will plunge into 15 days of darkness on Nov. 15. Don't be left in the dark on this space hoax.

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U.S. Uterus Transplants: 6 Things to Know

Ten women in the United States will soon be chosen to undergo the nation's first uterus transplants. The procedure is still highly experimental, and there are unknown risks.

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Bay Bridge Pier to Go Boom: The Science of Implosions

A massive portion of the old Bay Bridge is set to be demolished on Saturday, but the whole endeavor is unlikely to be very dramatic, experts say.

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Friday the 13th Times 3: Why So Many 'Unlucky' Days in 2015?

Enjoy this inauspicious Friday, because you won't see another one like it until 2026.

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Friday the 13th: The Science Behind the 'Unlucky' Day

Can't get enough of Friday the 13th? Here's a collection of stories and countdowns about the superstitious day.

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Bumblebee Training Reveals Males to Be Surprisingly Smart

Male bumblebees are good for more than just sex. Turns out, they've got smarts as well and get flying colors on flower tests just like females.

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Armadillos Carrying Leprosy Bacteria Spreading in Southern US

Armadillos that carry the bacteria that cause leprosy now live over a much larger range of the South than they did just a few years ago, a new study suggests.

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Salt Labeling Explained (Infographic)

USDA recommendations for salt labeling on food packaging.

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In Photos: Inside Egypt’s Great Pyramids

Images reveal Egypt's Great Pyramid of Khufu and recent scanning research that archaeologists have undertaken there. Their findings suggest the presence of a possible tomb hidden in the pyramid.

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Triassic Reptile Skewered Clams with Teeth on Roof of Its Mouth

Giant, lizardlike beasts with teeth strong enough to puncture clamshells and equipped with short limbs and a long, paddle-shaped tail populated waterways some 200 million years ago. And now, two new species of these thalattosaurs have been added to the ra

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Dinos & X-Ray Probes? Photos Show Playful Side of Particle Physics

Advanced physics is a lot more fun than you might think.

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In Images: Physics Photowalk Contest Winners

The winning images from this year's contest don't disappoint.

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Earthquakes Could Trigger Massive Supervolcano Eruptions, Study Suggests

Supervolcanoes, such as the one dormant under Yellowstone National Park, may erupt when cracks form in the roofs of the chambers holding their molten rock, according to a new study.

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1 in 45 US Kids Has an Autism Spectrum Disorder

The autism rate in the U.S. has now reached 1 in 45 children, according to a new government estimate.

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Boa Constrictor Facts

Boa constrictors are non-venomous snakes famous for their method of subduing prey. They rank among the longest snakes in the world.

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North American Mammoths Actually Evolved in Eurasia

The famous Columbian mammoth — an 11-ton creature known for traversing North America during the last ice age — might actually be the same species as the Asian steppe mammoth, a new study finds.

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Mysterious 'Blood Rain' Tints Water a Gruesome Hue

In several small villages in the northwest of Spain, no one knew what made the water in their fountains turn a blood-like red.

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Incan Child Sacrified to the Gods Reveals History of American Expansion

The genetics of an Incan child who was sacrificed about 500 years ago reveals details of the Native American expansion into the Americas.

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8-Hour Sleepers More Likely to Be Heart Healthy

People who get enough sleep are more likely to hit other heart health targets, too.

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Lost Pharaoh? Great Pyramid May Hide Undiscovered Tomb

Speculation swirls anew that within Egypt's Great Pyramid of Khufu there lies a hidden tomb, possibly holding the pharaoh himself, sealed there for thousands of years.

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Firefighters Face Highest Heart Attack Risk Among Responders

Compared to other emergency responders, firefighters are more at risk for heart disease.

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Earth’s Oldest Water May Have Come from Ancient H2O-Filled Dust

A new study delivers the first evidence that water in ancient dust grains collected at the heart of an infant Earth during its formative years.

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Earth's Absorption of CO2 May Tilt In Wrong Direction | Video

For at least the past 50 years, about half of all Earth’s carbon dioxide emissions - human and natural - have been absorbed by the land and oceans. Scientists are trying to understand how much more CO2 this global carbon sink can take.

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Rural Biomass Burning vs. Megacity Industry: Who Emits More CO2 | 5-Day Time-Lapse Video

Scientists are studying the heat trapping behavior of CO2 released by land-clearing and accidental forest fires vs. factories in large urban centers. The data producing this simulation were taken during a 5-day period in June 2006.

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3 Months of Carbon Dioxide Measured From Space | Time-Lapse Video

NASA Orbiting Carbon Observatory 2, launched in July 2014, measures global atmospheric carbon dioxide. Data from May to August 2015 were compiled to create this visualization.

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Gaia’s Garden - One Year of Earth’s Plant Growth | Time-Lapse Video

Plant growth and decay on land and ocean over a 12-moth cycle can be seen in this ‘average year’ data set, compiled from many science imaging satellites

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Ultrathin Graphene Can Improve Night Vision Tech

Night-vision windshields on cars might one day be possible with advanced thermal imaging technology based on flexible, transparent, atomically thin sheets of carbon, researchers say.

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Here’s How Many Americans Are Now Obese

Nearly 38 percent of U.S. adults are obese, according to the latest obesity numbers from the Centers for Disease Control and Prevention.

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Teens Are Happier Than in the Past — Why Are Adults So Miserable?

A cultural shift in happiness trends sees teens cheerier than ever while adults over 30 watch their happiness decline. The results may illuminate why the death rate is rising for middle-age Americans, even as it falls for other age groups

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500-Year-Old Church Discovered in Slave Trade Settlement

Archaeologists have uncovered a 500-year-old church that may be the oldest known European Christian church in the tropics.

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Low-Carb Diet Facts, Benefits & Risks

A low-carb diet focuses on cutting carbohydrates from a person’s diet. While it can help some lose weight, it can also deprive the body of needed nutrients if taken to extremes.

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Facts About Water Snakes

Water snakes are non-venomous snakes found in North America. They are sometimes misidentified as water moccasins, which are venomous.

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The Great Salt Debate: How Much Sodium Is Too Much for Your Diet?

Americans are eating more sodium than recommended. Is that bad?

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Brain Scan May Predict Chance of Coma Recovery

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New 'Making North America' Series Explores Continent's Rich History

North America rocks. That’s what a new three-part series from "Nova" shows as it explores the rich history of the continent — from glaciers in Alaska to volcanoes in Hawaii to the crystal-clear waters of the Bahamas.

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Shy Eel Glows Bright Green, Possibly As a 'Sexy Charm'

When scuba-diving scientists serendipitously spotted a glowing green eel in January 2011, they had no idea what caused it to light up like a brilliant neon sign.

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Photos: Catch a Glimpse of the Reclusive Glowing Green Eel

A serendipitous photo taken during a scuba-diving trip in the Caribbean clued researchers into the world of a mysterious green and glowing eel.

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Glowing Eels? Sex Drives Brain Protein to Evolve Brightly | Video

A 'brightly fluorescent protein' has been revealed in some species of marine eels causing them to glow. Researchers have speculated that, because the full moon 'excites' the glow of the sea creature, this may be a mating adaptation.

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Part of Pluto's Heart Was 'Born Yesterday'

The western lobe of Pluto's "heart" is surprisingly young — no more than 10 million years old — and the dwarf planet's atmosphere is surprisingly compact. The latest research from the New Horizons mission continues to reveal surprises from the dwarf plane

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'Zombie' Star's Asteroid 'Lunch' Revealed in Close-Up View

A "zombie" star and the remains of its lunch are revealed in a new close-up view, 12 years in the making.

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Honeybees Sweetened Life for Stone Age Humans

Stone Age people used beeswax and, most likely, honey, a habit that began at least as early as the beginning of agriculture.

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Dog-Size Rats Once Lived Alongside Humans

Thousands of years ago, rats as big as dachshunds lived side-by-side with people, who frequently ate the robust rodents.

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China's Smog Levels Reach 50 Times the Limit: 'Everybody is at Risk'

Shenyang's smog is even a problem for healthy individuals.

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Darwin's 'Origin of Species' Voted Most Influential Academic Book

Darwin's dusty tome on the evolution of different species was just rated the most influential academic book in history.

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Facts About Sheep

There are thousands of breeds of domestic sheep, and at least four species of wild sheep.

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Eating Heart Healthy: Which Foods Actually Help?

What foods should you choose to improve heart health?

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What If All of Earth's Insects Keeled Over?

Sure mosquito bites and insect-carried diseases would be out of the picture, but without these pesky six-legged critters, the world as we know would not exist. In fact, we may not exist.

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Ozone Hole Over Antarctica Nears Record-Breaking Size Again

An ozone hole larger than the North American continent was observed over Antarctica by researchers at the German Aerospace Center. It's the first time the ozone hole has been this large since 2006.

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How Robots Are Building a 3D-Printed Metal Bridge in Amsterdam

These torch-wielding robots might be the new face of manufacturing.

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How Ebola Spread: Map Could Aid Outbreak Responses

A new map reveals the path the Ebola virus took as the deadly virus spread across Sierra Leone.

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Sweet Beginnings: Origins of Chocolate Found

Theobroma cacao, the tree that produces chocolate, first diverged from its nearest relatives about 10 million years ago, new research suggests.

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Woman in Africa Survives Double Whammy of Ebola, Stroke

A middle-age woman in Africa who became infected with Ebola suffered a stroke during her bout with the virus but managed to survive both maladies, according to a new report of her case.

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Man's Rare Heart Disorder Went Unnoticed for 67 Years

A congenital heart defect went undetected for nearly seven decades.

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Fitness vs. Fatness: What's More Important?

The "obesity paradox" may really just be all about cardiovascular fitness, one researcher argues.

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This Adorable Kitty Looks Like a Werewolf: Here's Why

This oddly adorable cat carries a genetic secret.

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Octopus Gets Mental Workout with Hamster Ball

Octopuses are highly intelligent, and thanks to their amazing, neuron-filled tentacles, they can do humanlike tasks such as unscrewing jars and lids.

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SeaWorld Phasing Out Killer Whale Shows: Will It Make a Difference?

SeaWorld San Diego, long known for its live killer-whale shows, will begin phasing out the performances next year in favor of conservation-based shows.

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Why the Pyramids Spawn So Many Wacky Theories

Ben Carson thinks the Egyptian pyramids were built by the biblical figure Joseph to store grain. But he isn't the only person to ignore the overwhelming evidence about why the pyramids were built.

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Half-Billion-Year-Old Brains Preserved in Fool's Gold

The brains of a 520 million-year-old shrimplike creature were fossilized in carbon and pyrite, or fool's gold.

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Inventor and Actress Hedy Lamarr Honored with Google Doodle

A Google Doodle on Nov. 9, 2015, honored Hedy Lamarr, MGM movie star and inventor

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Photos Capture Great White Sharks Mid-Bite

Massive great white sharks launching their 3-ton bodies out of the ocean and into the air can be a spectacular sight, if you're lucky enough (and brave enough) to be in the right place at the right time.

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In Photos: Great White Sharks Attack

See amazing images of great white sharks breaching off South Africa, launching their 3-ton bodies from the water to grab seals.

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City Life Can Be Tough on Bees

Humans aren't the only ones stressed out by city life. Feral urban bees' immune systems work harder to fend off more intense attacks from deadly pathogens.

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Self-Folding Paper 'Table-Dance' Powered By Light, Heat | Video

Researchers at Donghua University have built the paper out of nanoscale graphene oxide. In a "micro-robot capacity, the origami-inspired paper can be used to grasp and move objects that are up to 5X heavier.

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Self-Folding Minirobots Possible with Origami-Inspired Graphene

Origami-inspired graphene paper that can fold itself could be used to create anything from miniature robots to artificial muscles, according to a new study.

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Ancient Brazilian Lake Offers Trove of Amphibian Fossils

A mishmash of ancient amphibians and reptiles once swam and hunted prey in an ancient Brazilian tropical lake, a new study finds.

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Parents Targeted by TV Ads Putting 'Healthful' Spin on Kid's Drinks

Commercials for kids' snacks may lead parents to think the foods are healthier than they really are, researchers suggest.

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Why You Should Check Your Blood Pressure in The Morning

Does time of day matter when it comes to taking blood pressure?

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Heart Risks Raised by Just One Energy Drink, Study Suggests

Your energy level isn't the only thing that gets a boost after downing an energy drink.

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For Tracking Your Diet, Smartphones Beat Paper and Pencil

When it comes to keeping a food diary, some ways are better than others.

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Meet Your Microbes: Museum Exhibit Reveals a 'Secret World'

A new exhibit at the American Museum of Natural History explores our inner microbial selves.

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8 Baby Turtles: Cute, and Critically Endangered (Photos)

Can these tiny turtles help prevent their species' extinctions?

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The Science of Vitamin C: Can Taking It Prevent a Cold?

Vitamin C may have a modest effect on how long colds last, but it's unlikely to ward off the wintertime sniffles completely, evidence suggests.

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Most Allergy Sufferers Not Getting Relief from Over-the-Counter Meds

Many people with hay fever who take medicine to help with their symptoms say they don't feel that much better.

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Can Science Predict if You Will Marry Your Partner?

Is he or she the one? You know… the one to introduce to my parents, the one to move in with, the one to start a family with, the one to marry? At some point in every dating relationship, you ask yourself some version of these questions.

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Hunger Games: How to Avoid Real Food Riots (Op-Ed)

If food runs short, what will governments do?

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Obama Administration Rejects Keystone XL Pipeline

President Obama said Friday that the pipeline would not serve the national interest of the United States.

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Giant Magma Ocean Once Swirled Inside Early Earth

New experiments have confirmed a giant ocean of magma, or molten rock, might have existed in the lowermost part of Earth's mantle long ago. Remnants of this ocean still exist below our planet's surface, X-ray measurements reveal.

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'Mirror Universes' Might Look and Behave Like Ours, Study Finds

What's the difference between matter and antimatter? Sometimes nothing, a new study finds.

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Get a Whiff of This: Man Hasn't Showered in 12 Years

A man who hasn't showered in 12 years says that a daily scrub wipes away beneficial bacteria that help regulate stink-producing microbes on the skin.

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Artificial Skin Could Give People with Prosthetics a Sense of Touch

Scientists are one step closer to developing life-like prosthetics: A research team from Stanford University has created artificial skin that allows brains cells to "feel."

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Jetpack Pilot Soars Over NYC's Hudson River, Salutes Lady Liberty

The future has arrived in the Big Apple.

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'Pompeii of the New World' Reveals Power of Mayan Commoners

Elite Mayans are famous for their hieroglyphs and calendars, but commoners had it pretty good, too. That's what archaeologists found in a city frozen in time 1,400 years ago by a volcanic eruption.

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Facts About Crows

Crows are large black birds that are known for their intelligence and adaptability.

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The Dirty 'Clean Fuel': Why Natural Gas Out-Pollutes Coal (Op-Ed)

If you want a clean fuel, you should look beyond methane.

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A 'Natural' Herb Can be Poisonous, Woman Learns

A woman who was a "trained herbalist" wound up in the ICU after using a natural remedy.

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Swallowed Bobby Pin Ends Up in Child's Kidney

There's just no way to stop toddlers from putting things in their mouths, so parents should keep small objects out of reach, doctors say.

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Dengue Fever Outbreak Hits Hawaii — Will It Last?

Four more people were diagnosed with dengue fever on Hawaii's Big Island Wednesday (Nov. 4), raising the number of locally transmitted cases to 15 people, according to the Hawaii State Department of Health.

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Spotted! Elusive Snow Leopard Caught on Camera in Kyrgyzstan

An elusive snow leopard was recently seen and collared in Kyrgyzstan — a first for the landlocked, mountainous country.

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In Images: Daredevils Zoom Past a Jumbojet

Two daredevils, Yves Rossy and Vince Reffet, recently completed a jaw dropping stunt by flying by a commercial jetliner using jetpacks.

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Tummy Tucks May Be Riskier Than Other Plastic Surgeries

Tummy tucks have a higher rate of major complications than other cosmetic plastic-surgery procedures, according to a new study.

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F-35 Fighter Jet Blasts Through 1st-Ever Airborne Gun Test

For the first time ever, an F-35 fighter jet has fired its fun into the wild blue yonder.

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Bus Driver Suffers Vision Loss from Child's Toy Laser

A bus driver suffered a tiny burn in his and lost some of his vision after a child a the bus pointed a laser into the rearview mirror.

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Watch Jetpack-Wearing Daredevils Zoom Past a Jumbo Jet (Video)

Two daredevils strapped to jetpacks zoom by the world's largest commercial jetliner in a stunning new video.

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Best Ovarian Cancer Treatment Scarcely Used - Why? | Video

Ohio State University study finds only 41% of women eligible for a dual chemo treatment actually received it. In advanced cases, where surgery removed tumors, dual dose chemotherapy dramatically increased survival rate.

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Ancient Cosmic Crashes May Have Altered Earth's Composition

Earth's chemical composition is drastically different from that of the rocks that helped to form the planet. Now, scientists think they may know why: The constant pummeling that formed Earth may have altered its composition.

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Mysterious Dark Matter May Not Always Have Been Dark

Dark matter particles may have interacted often with normal matter long ago, when the universe was very hot, a new study suggests.

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Mysterious Symbols in Kazakhstan Desert: How Old Are They, Really?

Sprawling earthen swastika designs, crosses and rings that cover part of Kazakhstan are becoming a little less mysterious: Archaeologists studying the geoglyphs have found when they were created and what their function might have been.

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The Future of Drones: Uncertain, Promising and Pretty Awesome

The future of drones is here, but are we ready?

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Rare Dinosaur Find: Fossil Covered in Feathers, Skin

The skeleton of a heavily feathered, ostrichlike dinosaur has "unparalleled" fossilized feathers and skin — anatomical features that aren't usually preserved in dinosaur remains, a new study reports.

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Sofia Rises: Baby Name Takes Over the World

Sofia, Sophie and other spelling variants are among the top names in a dizzying array of countries. What gives? Turns out the name has some innate qualities that may explain how it has swept the world.

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Mooooove Over, Cows! Kangaroo Farts Warm the Earth, Too

Since the 1970s, it has been suggested that kangaroos don’t fart — or rather, the (ahem!) gas they emit contains very little, if any, methane. But now, new research suggests this isn’t true.

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The Role of Animal Farts in Global Warming (Infographic)

Methane gas fermented in the guts of farm animals contribute up to 26 percent of U.S. methane emissions.

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A Revolution in Breast Cancer Treatment? Milder Options are Emerging (Op-Ed)

Breast cancer treatments are evolving, and lives are being saved.

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Man Dies After Tapeworm Inside Him Gets Cancer

A Colombian man's lung tumors turned out to have an extremely unusual cause: The rapidly growing masses weren't actually made of human cells, but were from a tapeworm living inside him.

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Better Instructions for Tattoo Care Could Prevent Infections, Doctors Say

Only seven states have strong policies requiring tattoo artists to instruct customers on tattoo "aftercare."

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Chinese Robot Just Kept Walking…and Walking…and Walking

A four-legged robot with serious athletic endurance recently walked its way right into the history books.

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A Tale of 2 Worlds: Nations Collide on Climate Change (Op-Ed)

To fight global warming, wealthy nations need to actually ask poor nations what they need.

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Tidy Monkeys Shed Light on Human Cleanliness

Monkeys that are revolted by often disease-carrying things such as poop suggest that disgust drives cleanliness - and health.

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Garcinia Cambogia: Supplement Often Lacks Active Ingredient, Study Finds

Many popular weight-loss supplements that claim to contain Garcinia cambogia contain much less of the active ingredient than they claim, a new study suggests.

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Ear Maggots and Brain Amoeba: 5 Creepy Flesh-Eating Critters

From tissue-munching bacteria to brain-eating amoebas, there are a number of things that can literally eat you alive.

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Oil Spill Aftermath: Why Baby Dolphins May Be Rare in Gulf Waters

Bottlenose dolphins swimming in waters affected by the Deepwater Horizon oil spill are dying earlier and birthing fewer calves than dolphins living in other areas, a new study shows.

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Numbers on Ice: Why a Mathematician Adventures in the Arctic (Video)

To get a handle on sea ice "composites", send mathematicians to the poles.

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Are the Internet's Undersea Cables at Risk for Sabotage?

Recently a New York Times article on Russian submarine activity near undersea communications cables dredged up Cold War politics and generated widespread recognition of the submerged systems we all depend upon.

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Robin Williams' Suicide: What Is Lewy Body Dementia?

Robin Williams may have committed suicide because he had a condition known as Lewy body dementia, in which an abnormal buildup of brain proteins cause progressive cognitive declines.

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Rare Multistate Outbreaks Cause the Most Foodborne Illness Deaths, CDC Says

Only a few outbreaks of illness related to food yearly spread beyond a single state. But the outbreaks that affect people in multiple states account for a higher number of deaths, a new report finds.

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Photos: Hypersonic Jet Could Fly 10 Times the Speed of Sound

A hypersonic concept plane, dubbed Skreemr, could fly passengers from New York to London in just 30 minutes — at least in theory.

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66-Million-Year-Old Giant Raptor Fossils Found in South Dakota

Sixty-six million years ago, a giant raptor with feathered arms chased prey around the ancient South Dakotan landscape, a new study finds.

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Fires in Indonesia Send Orangutans Fleeing for Safety

The man-made fires in Borneo have hit orangutans hard, displacing them from their homes and exposing the animals to enough smoke to make them susceptible to respiratory problems.

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Anti-Vaccination Websites Use 'Distorted' Science, Researchers Find

Many websites that promote unscientific views about vaccinations use pseudoscience and misinformation to spread the idea that vaccines are dangerous, according to a new study.

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Giant Wyoming Crack Explained: A Landslide Brought It Down

A gaping crack the length of six football fields that opened up in a matter of one to two weeks in northern Wyoming is likely the product of a landslide, geologists said.

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Garcinia Cambogia: Supplement Often Lacks Active Ingredient, Study Finds

Many popular weight-loss supplements that claim to contain Garcinia cambogia contain much less of the active ingredient than they claim, a new study suggests.

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Photos: Ancient Citadel Unearthed in Jerusalem

Archaeologists and historians have debated the fortress' location for a century.

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Acra at Last? Site of Ancient Jewish Revolt Unearthed

Archaeologists in Jerusalem may have just solved one of the city's greatest geographical mysteries.

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Can Prenatal Choline Cut Schizophrenia Risk in Kids?

Can a nutrient found in egg yolks reduce the risk of schizophrenia?

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Rare Earthquake Trio Shakes Phoenix: What Happened?

The stretching of the Earth's crust in a seismically transitional region likely caused the three quakes that struck Phoenix, Arizona, Sunday night. Such temblors are relatively uncommon in the state.

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Europe's Asylum Seekers Face Psychological Trauma

The majority of asylum seekers in one Dresden facility have traumatic experiences and psychological diagnoses, highlighting the need for psychiatric care.

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Revolt in the Hive: Why Worker Wasps Sometimes Kill Their Queens

Workers in wasp nests sometimes kill their queens, even though these egg-laying wasps are also their mothers. Now, researchers think they might know why such murders take place.

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Alan Alda's Challenge: Can you Explain Sound to an 11-Year-Old?

Scientists, it's time to lend your ears (and your knowledge) to this year's big science competition: Explaining the science of sound to 11-year-olds.

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Facts About Alpacas

Alpacas are domesticated versions of a South American ruminant called the vicuña. There are no alpacas in the wild.

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Are Americans Eating Healthier? Take This Study with a Grain of Salt

People in the U.S. are now eating healthier -- and 1.1 million premature deaths were prevented by our healthier habits. But there's still quite a bit of room for improvement, a new study finds.

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How a Family Dog May Lower a Child's Asthma Risk

Kids who live in a house with a dog before they turn 1 have a lower risk of asthma a few years later, a new study suggests.

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Micro Mollusk Breaks Record for World's Tiniest Snail

An itsy-bitsy mollusk in Borneo is the new record holder for the world's smallest known snail, a new study finds.

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Hypersonic Jet Could Cross the Atlantic in 30 Minutes (Someday)

How'd you like to travel from New York to London in less than an hour?

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The Active Sun: US Unveils Plan to Deal with Space Weather

On Thursday (Oct. 29), the White House released two documents that lay out the nation's official plan for mitigating the negative impacts of solar flares and other types of "space weather."

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Cannibal Tyrannosaurs: Proof May Be in a Gnawed Bone

Sixty-six million years ago, a tyrannosaur may have sunk its sharp and serrated teeth into the bones of another tyrannosaur, new research suggests.

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Physiology Pioneer's Nobel Prize Sells for Nearly $800,000

One scientist's hard-earned golden prize just sold for a sizeable chunk of change.

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Codswallop! Ancient British 'Sea Monster' Mislabeled for 200 Years

A group of ancient "sea monsters" is caught up in a centuries-old case of mistaken identity, according to new research.

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Tomb Tells Tale of Family Executed by China's 1st Female Emperor

Scientists discovered a 1,300-year-old tomb holding the remains of the man who helped China's only female emperor rise to power. Epitaphs on the tomb tell of how the empress murdered her advisor and his family.

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Photos: Tomb Reveals Murderous Tale of China Empress

Photos reveal the epitaphs and treasures from an ancient tomb of the advisor to China's first and only female emperor.

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No Digital Divide: Mobile Media Plentiful in Low-Income Families

Toddlers whose families are not well-off financially are spending plenty of time using mobile media devices, a new study reveals.

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Why Do Sand Dune Avalanches Boom, Burp and Sing?

Avalanching dunes can create their own music, when toppling sand erupts first with staccato burps and then with monotone "singing" booms. These tunes have long intrigued scientists, and now a team of physicists has deciphered why they occur.

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