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Why don’t poison frogs poison themselves?
Scientists are a step closer to resolving this head-scratcher. And their findings have potential consequences for the fight against pain and addiction.
September 29, 2017
Did dino-killing asteroid speed bird evolution?
A study suggests the asteroid that wiped out the dinosaurs 66 million years ago increased the pace of evolution in birds, their only remaining descendants.
September 28, 2017
Passing spacecraft snaps Earth pics
OSIRIS-REx swept past Earth on September 22 and received a gravity boost toward its goal, asteroid Bennu, in 2018. It also acquired the images to make this stunning new Earth portrait.
September 26, 2017
Giant iceberg on the move
The calving of this iceberg in July reduced the size of Antarctica's Larsen C ice shelf by 12 percent. The berg hung near the coast awhile, but now it's seen drifting.
September 25, 2017
Sun on the sky’s equator
Another great explanation of Friday's equinox - plus beautiful graphics - from astronomer Guy Ottewell.
September 22, 2017
Zap! Biologist measures electric eel’s shock on his own arm
Talk about dedication to science! This biologist stuck his arm into an eel tank - 10 times - to get an accurate measure of an eel's shock. He said it felt "like touching a horse fence."
September 20, 2017
Dust devils on Earth and Mars
Researchers spent 5 years studying dust devils in earthly deserts. They said their research has implications for climate and weather on both Earth and Mars and for human health.
September 18, 2017
Irma turns Caribbean islands brown
Wow. Check out these satellite images of Caribbean islands before and after Hurricane Irma
September 13, 2017
Openings in Antarctic sea ice influence global climate
Heat escaping through openings in sea ice influences sea and atmospheric temperatures and wind patterns around the globe - even rainfall around the tropics, says new study.
September 13, 2017
