Ryugu’s samples reveal that water activity on asteroids lasted far longer than scientists thought, possibly reshaping ...

Throughout most of Earth's geological history, its paleoclimate has remained hospitable to life—largely thanks to continental ...

A new study has proposed the existence of Planet Y, an alternative Planet Nine candidate that is smaller and closer to Earth ...

Three-quarters of the world's drought-prone areas are at risk of extreme water shortages — known as "day zero droughts" — this century, and some could be hit before 2030.

A surge in global temperatures has caused widespread bleaching and death of warm-water corals around the world.

One of the most notable properties of the giant planets in our solar system—Jupiter, Saturn, Uranus and Neptune—are the ...