Earth was mostly devoid of oxygen for much of its 4.5 billion year lifetime. That is, until certain processes started to ...

Scientists have finally cracked the mystery behind one of climate change’s strangest fingerprints: while Earth’s surface heats up, the upper atmosphere is rapidly cooling. Researchers at Columbia ...

Look up on a clear night and you'll see the streaks of our new space age. What you don't see is the growing fallout for the atmosphere that keeps us alive. A wave of satellite launches and reentries ...

The air high above Earth has been moving in the opposite direction of the world below it. While the planet’s surface and lower atmosphere keep warming, the stratosphere, the layer that begins about 11 ...

A new study reveals that tiny fragments of Earth's atmosphere are transported to and absorbed by the moon via gusts of solar wind and our planet's magnetic field, upending a 20-year-old theory based ...