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Test your knowledge on a variety of topics.
The largest fault slip ever seen—which touched off the Japanese tsunami—came courtesy of slippery clay that "greased the wheels," say experts.
Decreased snowpack in the Rocky Mountains may compound problems for Colorado, Arizona, California, and other Western states.
Get information, facts, photos, news, videos, and more about our universe and beyond and what's coming up in your night sky.
Erika Engelhaupt on strange and surprising science
From sleepy bald eaglets to clamoring owlets, get a bird's-eye view of new families in their nests.
As most of humanity moves to cities, animals from coyotes to beavers are finding urban areas equally as appealing.
Talk about an odd bird—a bald eagle with white spots has been spotted in Washington State.
Shining light on the exploitation of wildlife