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The Defense Department has spent close to $3 billion since 2007 to treat and study traumatic brain injuries and post traumatic stress disorder. But a federal investigation finds that it's difficult to figure out how the money's been spent.

Terminal illness patients sometimes feel that their pain outweighs the benefits of life. Dr. Larry Egbert, co-founder and former medical director of the Final Exit Network, says he helped several patients find ways to end their suffering and lives. He was recently profiled in The Washington Post Magazine. He speaks with host Michel Martin.

Men were much more likely to have an oral HPV infection than women. And people who have had more sex partners and more frequent sex were more likely to be positive for HPV.

Physicians who pack on the pounds discuss weight loss less frequently with obese patients than doctors who have normal weights, a study finds. Overweight and obese physicians expressed greater confidence in prescribing weight-loss drugs than other doctors.

Dengue fever cases are soaring worldwide, according to the World Health Organization. They're also hitting closer to home. Two locally acquired cases were reported in Miami last year, and public health experts say we should expect more.

The Barbershop guys discuss the GOP debate in Florida, Arizona Gov. Jan Brewer's dust-up with President Obama, and the "Taco" Mayor in Connecticut. Host Michel Martin speaks with journalist Jimi Izrael, attorney Arsalan Iftikhar, columnist Ruben Navarrette and BlackAmericaWeb.com's Michael Cottman.

Star Beast, The Scar, Tribal Rights of the New Saturday Night: If you saw them, you'd know them, but there's a reason you've never heard of these popular movies. Critic Bob Mondello takes a look at movie titles that fell by the wayside.

The son of Transportation Secretary Ray LaHood has been prevented from leaving the country. He and others who work for foreign groups are under suspicion of supporting anti-government protesters — a charge he says is "patently false."

Coming so soon after the death of freestyle skier Sarah Burke following a training accident, 22-year-old snowmobile freestyler Colten Moore's crash may make you shudder. But rest assured, he wasn't seriously injured — and went on to win the event.

Newt Gingrich laid out his case for an activist policy in Latin America, while Mitt Romney spoke warmly about the prospect of statehood for Puerto Rico.