Researchers have helped overturn the popular theory that water on Earth originated from asteroids bombarding its surface; Scientists have analyzed a meteorite analogous to the early Earth to ...

Historically, the Zambezi River in Southern Africa was believed to begin its journey at a spring in northwestern Zambia. A new study suggests the river actually starts off in a shallow depression in ...

The federal government’s ability to regulate greenhouse gases depends on a 2009 scientific determination. The Trump administration wants to repeal it. By Claire Brown A major new analysis issued ...