Most frogs land on their feet, but researchers have discovered some primitive species that flop on to their bellies, suggesting that frogs became proficient at jumping before they perfected landing.
07/27/2010 06:11 pm
Ride-sharing sites take a page from Facebook to match riders with rides.
07/24/2008 01:00 am
Barack Obama launched ads for his campaign in New York this week, contesting Hillary Rodham Clinton in her home state.
02/01/2008 12:00 am