Help identify Earth features in astronaut photos

Hey citizen scientists! You're invited to test a new tool to study Earth using photos taken by International Space Station astronauts. Here's how.

Scientists reveal secrets of lost continent Zealandia

Scientists have just returned from a major expedition to Zealandia, a "hidden" Earth continent, likely submerged beneath the sea surface more than 80 million years ago.

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.

How well can seeds survive in space?

If humans want to live on Mars, we're going to need to grow food. How well can seeds survive harsh, non-Earth conditions?

Biblical signs in the sky on September 23, 2017?

A mirror in the sky to "signs" from the Bible's Book of Revelation? Possibly. But this same sky scene has been seen 4 other times in the past 1,000 years. An astronomer explains.

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."

Wildlife Photographer of the Year 2017

Which one would you choose?

See it! Dance of planets before dawn

Mars emerged before dawn last week, to meet Mercury below bright Venus. And then the moon passed through. Thanks to all who submitted photos!

Humans are still evolving, say scientists

Scientists have identified genetic variants less common in older people than younger people. They say it's natural selection at work, continuing to weed out disadvantageous traits.

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.