News

Planetary Science

Chemical reactions high in Mars’ atmosphere rip apart water molecules

Mars is so dry because its water constant escapes into space. A new study suggests this process occurs in the ionosphere and faster than thought.

Earth

STEVE may be even less like typical auroras than scientists thought

The purple-and-green, atmospheric light show nicknamed STEVE just got even stranger.

Climate

Once hurricanes make landfall, they’re lingering longer and staying stronger

Warmer ocean waters due to human-caused climate change can help power hurricanes’ fury even after they roar ashore.

Health & Medicine

Protecting the brain from infection may start with a gut reaction

In mice, immune cells in the meninges are trained to battle infections in the gut before migrating to the brain.