US exit from dozens of international bodies sparks concerns over nuclear oversight in Ukraine, climate cooperation, and ...

The Anasazi, a once-flourishing tribe in the American Southwest, lived on bounties of corn, squash and beans. In 1276 A.D., ...

The world’s oceans are becoming dangerously acidic. A controversial proposal would raise the pH — by mixing chemicals into ...

Climate change has many culprits, from agriculture to transportation to energy production. Now, add another: the deep ocean ...

Europa’s buried ocean has made it one of the most exciting places to search for life beyond Earth. However, new calculations suggest its seafloor may be calm, cold, and largely inactive, with little ...

Shaking caused by quakes may cause ocean floor vents to release more nutrients, triggering blooms in plant-like organisms ...

After a 12-day crossing, and a hard slog through sea ice, the field work on this Antarctic expedition is ready to start.

Ancient horsetail plants, surviving for 400 million years, are revealing Earth's climate history. Their unique water ...