The "green," progressive veneer of southern California's lithium rush disguises serious social impacts that come hand in hand ...

Learn what a yellow-headed blackbird looks like and where to find this bird. Also discover facts about their sounds, nests, diet and more.

Why Does the Dead Sea Let You Float? Discover the secret behind the Dead Sea's buoyancy. Learn why the extreme salinity of this unusual saltwater lake allows you to float effortlessly.