Friedman, Danielle, Dell, Kristina, Newsweek
Byline: Danielle Friedman and Kristina Dell
NASA scientists want to build a cheap, earthbound laser that could zap away the "space junk" orbiting the earth. Yes, space junk--those manmade, useless objects that float above us, including old satellites and busted rocket stages. Beyond merely turning space into a heavenly garbage dump, these materials pose a risk for spacecraft. In 2009, for example, an active commercial satellite collided with a defunct Russian one, spewing debris throughout the solar system. The beam would push junk out of the way if it approached a spacecraft. The device could be shared by several nations to avoid a fuss over ownership of such a powerful piece of equipment.
1. A cloud of radioactive material from Japan's crippled nuclear reactors, floating ominously across the Pacific.
2. Cause of newest Los Angeles drug craze. Ex.: "Dude, got any iodide?"
A new study from the Proceedings of the National Academy of Sciences suggests that, dating back 400,000 years, early humans were skilled at controlling fire, using it regularly and continuously. The findings back up a growing body of research revealing that cave people weren't as dim as previously thought.
Home Sweet Home
How to get ahead? Stay behind at your parents'.
Good news for 20-somethings living in their parents' basement: new research suggests they're on the road to freedom. …