Arctic peatlands are expanding with rising temperatures, storing more carbon at least for now. But future warming could reverse this benefit, releasing massive emissions.

For years, astronomers have been searching for a mysterious ninth planet lurking in the dark outer reaches of our solar ...

Over the last few years, the term "Goldilocks zone" has come to be widely used to describe the range of distances from a star ...

During Earth's ancient Snowball periods, when the entire planet was wrapped in ice, life may have endured in tiny meltwater ...