Spaceflight and long-distance swimming shrink the heart

Scientists analyzed the hearts of retired astronaut Scott Kelly after he spent time in space and elite endurance swimmer Benoît Lecomte after he swam the Pacific Ocean.

via Livescience.com https://ift.tt/3fvY9kQ

Fiery 'airburst' of superheated gas slammed into Antarctica 430,000 years ago

Scientists found evidence of the impact on a mountaintop.

via Livescience.com https://ift.tt/3fwOyui

Astronomers see a ghostly 'radio jellyfish' rise from the dead in the southern sky

Astronomers discovered a radio structure that looks like a gigantic jellyfish, though it only glows in certain wavelengths.

via Livescience.com https://ift.tt/39qYX6T

How stress stops hair growth (in mice)

More research is needed to know if the same mechanism halts hair growth in humans.

via Livescience.com https://ift.tt/3rDBR39

Rabbits dig up 9,000-year-old artifacts on 'Dream Island'

Burrowing rabbits have helped uncover artifacts from the Stone and Bronze Ages on a U.K. island.

via Livescience.com https://ift.tt/3m5nmnF

Rarest great ape on Earth could soon go extinct

Tapanuli orangutans now occupy less than 3% of their historic habitat.

via Livescience.com https://ift.tt/3sQQHo8

Pfizer vaccine is 100% effective in preventing COVID-19 in children ages 12 to 15

Pfizer and BioNTech plan to submit the clinical trial data to the FDA as soon as possible.

via Livescience.com https://ift.tt/3u8iXTv