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Researchers made quite a find this week in Utah: a new species of raptor dinosaur. The ancient creature, a meat eater, was small and fast, with talon-like toes."These animals were incredibly fast, incredibly intelligent and some of them wielded very significant claws and sharp teeth," Dr.

Scientists say there's a link between climate and violent conflict.A statistical analysis of civil conflicts between 1950 and 2004 found that in tropical countries, conflicts were twice as likely to occur in El Nino years.

A lot of simple things in science turn out to be quite complicated.

Can the most modern of technologies help solve the health woes in the poorest countries in the world? Some biomedical engineers say yes.

On a remote, treeless island 60 miles south of Alaska's Prince William Sound, an old military radar tower has become one of the best bird observation sites in the world.Hundreds of black-legged kittiwakes nest on the tower.

On Friday, the city of Los Angeles will be closing one of its main freeways, Interstate 405, for 53 hours, from Friday night to Monday morning.It's part of a billion-dollar widening project that Los Angeles hopes will ease chronic traffic jams on the 405, but many residents, fearing the worst, are a

IRA FLATOW, host: This is SCIENCE FRIDAY, I'm Ira Flatow, trying to overcome a bout of laryngitis so see if you can hang in there with me for this program.