Volcanoes

The violent eruption Sunday in Guatemala is the latest in a series of volcanic events.

The asteroid that caused the great die-off may have hit in the worst possible spot

Does the global warming process actually begin under the sea?

A new study reveals one more consequence of our messing with the environment

It wasn't just an asteroid

There is no moon in the solar system like Jupiter's Europa, with an icy surface and a salty sea that may harbor life. Now, it appears that the moon has plate tectonics too—just like Earth