A Bus-Size Asteroid Will Whiz by Earth Friday

A small asteroid will zip safely by Earth on Friday (March 2) and you have a chance to see it as a pinprick of light in the sky in a live webcast.

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Why Do Firearm Injuries Drop During NRA Conventions?

People are injured by firearms every day, but a lower rate of gun-related injuries happen during a certain yearly event: the National Rifle Association (NRA) Annual Meetings and Exhibits, according to a new study that looked at eight years' worth of data.

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This Woman Is Her Own Twin: What Is Chimerism?

Twins often feel like they have a special connection, but for one California woman, the connection is particularly visceral — she is her own twin.

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Cosmic Dawn: Astronomers Find Fingerprints of Universe's First Stars

Stars were lighting up the universe by just 180 million years after the Big Bang, a new study reports.

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America's Tallest Mountain Has a Serious Human Poop Problem

Denali, the United States' tallest mountain, has issued new regulations to stop the accumulating mountain of human poop from contaminating local water sources.

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World's Biggest Plane Taxis Closer to Takeoff

A new milestone for the world's biggest plane rolls it closer to leaving the ground.

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An Even-Weirder-Than-Usual Tardigrade Just Turned Up in a Parking Lot

The world's newest species of water bear has eight legs and eggs covered with tentacles.

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