The sun’s magnetic activity causes auroras, and the relationship between solar flares and auroras reveals an 11-year cycle; ...

With eight billion people, we use a lot of the Earth's resources in ways that are likely unsustainable. Klaus Hubacek, ...

This study presents the first physical evidence that Snowball Earth reached the heart of continents at the equator.' ...

If another gravity theory is correct, "then the broader implications are enormous," astrophysicist Stacy McGaugh told ...

We have an extremely incomplete picture of what these snowball periods looked like, and Antarctic terrain provides different ...

Previous observations suggested that Ceres was less than 30% ice, and its craters were thought to imply that the dwarf planet ...