The Environmental Protection Agency this week starts regulating greenhouse gases from power plants and other big polluters for the first time.The rules only apply to new construction and major expansions, but they've become hugely controversial.
Here's a New Year's puzzle: Where in the United States would you have to travel to see the country's first sunrise of 2011?According to James Hilton, from the United States Naval Observatory, the answer is -- complicated."
Post-traumatic stress disorder, or PTSD, is a condition closely associated with the battlefield. But Michael Ferrara developed PTSD without going to war -- he spent three decades living and saving lives in Aspen, Colo.
Hey Clever Apes fans! We've selected a few highlights from our first six months and wrapped 'em all up in an hour long broadcast special. Why do kids play with fire? What happens when robots and theater mix? And why do some people age so well?
A company called SpaceX provided a peek Wednesday into the future of the American space program. The company's rocket, Falcon 9, lifted off from the Cape Canaveral Air Force Station in Florida, carrying a space capsule called Dragon.