In a major milestone in the search for life on other planets, astronomers have detected, for the first time, an atmosphere ...

Scientists have identified a hidden feedback loop that may explain how Earth has regulated its climate for tens of millions ...

Hydrogen can react with other chemicals, and both it and helium can be lost to space. Venus, Earth, and Mars are thought to ...

From July through September, registered participants receive a monthly list of suggested activities via email. Activities range from exploring a new walking route, making fruit smoothies and ...