Talk of the Nation

Scientists at the Belly Button Biodiversity Project wanted to engage the public. They started to culture the bacteria in people's navels as a way to remind them about the life living on their bodies. In the process, they discovered diverse organisms, some of them completely new to science.

Researchers from University College London followed thousands of people over the age of 52 for seven to eight years to assess the effect of loneliness and isolation. Isolation, not loneliness, may actually shorten people's lives regardless of health or income.

U.S. farmers anticipate planting the most corn since 1936, a total of 97.3 million acres. Farmers are hoping to rebuild their corn supplies after last year's drought. Chad Hart, economics professor at Iowa State University, explains why farmers intend to plant high amount of corn this season.

NPR's Neal Conan reads from listener comments on previous show topics, including the epidemiology of gun violence, what it means to be a 'Southerner' and going off the map.

With rates of childhood attention deficit hyperactivity disorder at alarming highs, a study confirms that, for many, the condition persists into adulthood. A study by the Boston Children's Hospital and the Mayo Clinic finds that the chronic form of ADHD can lead to depression and substance abuse.

Bees have been dying off in increasing numbers over the past few years. Experts say that habitat loss and disease are the biggest culprits, and some believe that pesticides are to blame. NPR science correspondent Dan Charles explains the possible causes and what is being done to stop this trend.

On Apr. 2, 2012, six people were killed and three wounded at Oikos University in Oakland, Calif. The shooter was a Korean-American former student, One L. Goh. Writer Jay Kang, who visited Goh in prison, explains how this tragedy has been discussed in the Korean-American community.

President Barack Obama named Julia Pierson as the head of the Secret Service, the first female director in the agency's history. At least one woman is said to be on the shortlist for FBI director. Women are also climbing the ranks on local police forces as well.

Washington Post deputy editorial page editor Jackson Diehl says that the Iraq War taught him a lot about how we should deal with the civil war in Syria. In an op-ed he argues that without U.S. intervention, Syria could produce "a much worse humanitarian disaster" than Iraq.

In Sunday night's NCAA men's basketball tournament, Louisville guard Kevin Ware suffered a gruesome injury. Coach Rick Pitino rallied the team and led them to a victory over Duke. When accidents like this happen, coaches are tasked with rallying team members and keeping them focused.

The U.S. Chamber of Commerce and the AFL-CIO agreed on a plan for a new system to import temporary workers. NPR senior Washington editor Ron Elving discusses the politics of the business-labor immigration deal. Rusty Barr, owner of Barr Evergreens, shares how he uses the guest-worker program.

The recent shooting and killing of a Texas District Attorney has local law enforcement and prosecutors on high alert for other threats. Threats against prosecutors, judges and DA's have been on the upswing in the U.S. in recent years. In 2012, 1,370 threats were made against federal judges.

When does a story about science become science fiction? Cosmologist Lawrence Krauss and theoretical physicist Brian Greene discuss how to spin a yarn about string theory or the Big Bang, without hyping the science. And novelist Ian McEwan, whose books touch on neurosurgery and quantum field theory, talks about what science offers to fiction.

With samples from over 1,800 separate meteorite falls around the world, ASU's Center for Meteorite Studies claims the world's largest university-based meteorite collection. Meenakshi Wadhwa explains how meteorites can teach researchers about the history of the solar system.

The Sonoran Desert, which spans some 100,000 square miles in southwestern North America, is one of the most diverse desert ecosystems in the world. Host Ira Flatow and guests discuss some lesser known desert creatures, and explore the secret life of that American southwest icon, the saguaro cactus.