Scientists have warned for years that the more the world warms, the greater the risk of hitting multiple climate tipping points and setting off self-propelling shifts in everything from the Amazon ...

Something in the Atlantic is shifting, though it is not easy to see from the surface. There are no dramatic waves or sudden ...

The Journey of the World's Largest Dust Source The Sahara is the largest source of aeolian dust in the world, with annual ...

Volcanoes that dominate postcards and disaster movies are often the ones we can see, their peaks etched against the sky. Yet ...

Despite setbacks, scientists around the world produced amazing discoveries every day, some of which made a big splash while ...

Mercury has long baffled astronomers because it defies much of what we know about planet formation. A new space mission ...

More than 25 million cubic yards of rock and ice broke loose and plunged into Greenland's Dickson Fjord, creating a ...