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California's produce farmers are asking the federal government for more oversight. They say consumer anxiety about food safety could hurt their bottom line. KPBS Radio's Andrew Phelps has the story.

In 1994, Fred Thompson, a longtime lobbyist, exchanged his business suits for a plaid shirt and a red pickup truck. His new, folksy "outsider" image won over Tennessee voters and gained him a U.S. Senate seat in his first political campaign.

Wikipedia has become the world's largest living reference work, written and edited by the public. Host Tom Fudge talks with Pat Neil, chief technology officer at UCSD, and Jim Jacobs, data services li

The large number of undecided voters in South Carolina has left the race for the GOP primary wide open. Sen. John McCain is at the back of the pack. Still, he keeps South Carolina in his sights even though it's the state that crippled his 2000 presidential election ambitions.

In Russia's Kamchatka Peninsula, a group of American fly fishermen and Russian scientists work to protect one of the world's last remaining strongholds of wild salmon, steelhead and trout. NPR's Elizabeth Arnold reports.

DiCaprio is serious about the environment. He's not just lending his voice to this indie documentary. He's on board as a producer and is even listed as a co-writer. The filmmakers are Leila Conners Petersen and Nadia Conners, a pair of sisters and first time feature filmmakers. Together with DiCaprio they have previously made a global warming short. In

Republican Sen. John Warner of Virginia has announced that he will not run for re-election in 2008 and will retire after 30 years in the Senate. Warner has been one of the most authoritative voices in Congress on the military — and a key figure in the debate over the war in Iraq. Warner's retirement will make it even more difficult for Republicans to win back the Senate majority that they lost in November.

We talk to voiceofsandiego.org reporters Kelly Bennett and Dagny Salas about their reporting series, "Out Of Reach" and discuss San Diego County's safety net for the poor.

Researchers at Emory University analyzed hundreds of hours of videotaped gestures used by two groups of chimps and two groups of bonobos. The results of their study could lend a clue to how human language evolved.

Before Hurricane Katrina came along, U.S. insurers didn't consider climate change when they assessed the risk of events like floods. Now they're factoring in a changing world, and it's costing consumers in places like New Orleans.