This tried-and-true method is one of the best ways to study so you actually retain information—and it's not hard to do. Here's what you need to know.

Step aside, carbon dating. Paleontologists date fossils based on the clues in the rocks surrounding them. When paleontologists dig up a fossil from the ground, how do they figure out the age of the ...

For a half century, scientists have agreed that pure lithium metal—the lightest metal on the periodic table and jam-packed ...