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Reporting in Science, researchers write that many of today's most widely spoken languages, like English, Spanish and Hindi, can be traced back to ancient tongues in present-day Turkey. Evolutionary biologist Quentin Atkinson talks about investigating language evolution using the same methods geneticists use to trace flu virus outbreaks.

The documentary film 'Carbon Nation' aims to get viewers to make more climate-friendly energy choices but director Peter Blyck says he isn't trying to change anyone's views on climate change. Byck discusses the film, and his "common sense" approach to curbing CO2 emissions.

It's the latest setback in a field marked by failure. Earlier this month, Pfizer and Johnson & Johnson said they were dropping development of a similar experimental drug after big clinical studies showed it wasn't working.

Travis Tygart says the USADA uncovered one of the "most sophisticated drug conspiracies we've ever seen." And that reason why Lance Armstrong decided not to fight the charges is obvious.

Besides voicing the Count, Nelson originated such Muppet characters as Mr. Snuffleupagus and Gobo Fraggle.

Farmers are getting real-time news they can use, and moral support, from other farmers on Twitter. The social networking tool is especially important in this year's severe drought, which is affecting most of the country.

This week, a Hampton University dean banned its MBA students from wearing dreadlocks and cornrows. In an era of stark individualism, where anything can be…

A new report from the International Atomic Energy Agency says Iran has stepped up its program to enrich uranium. It reports the country is installing more centrifuges in a heavily-defended underground site.

Melissa Block talks with Jay Shapiro, a documentary filmmaker who's been following the Ugandan Little League baseball for three years. This year, Uganda made it to the Little League World Series for the first time, becoming the first team from Africa to ever play in the World Series. Shapiro talks about what their participation means for the sport, the country, and more broadly, Africa.

Audie Cornish speaks with sportswriter Stefan Fatsis about some news regarding the use of performance-enhancing drugs in baseball. Bartolo Colon of the Oakland Athletics was given a 50 game suspension for testing positive for testosterone.