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Skipping a meal triggers the munchies in a similar way that marijuana does, a study in mice finds. And it works, at least in rodents, by boosting the sense of smell. Receptors in the brain that get activated when the animals are stoned also light up after they've been fasting.

Despite a Justice Department decision giving same-sex married couples equal recognition in federal courthouses, prisons and other programs, inconsistency in the treatment of same-sex married couples under the health law remains. States still make their own decisions.

In the heart of Spanish Harlem, women from Morocco to Mexico are finding a path to entrepreneurship at the incubator Hot Bread Kitchen. The non-profit has been hailed by President Clinton as scalable model for a training programs worldwide.

Obama is currently hosting French President François Hollande for a state visit, the first to the White House in about two years.

German Natalie Geisenberger's winning margin of 1.139 seconds was the largest at the Olympics since 1964, the sport's first year at the games. The American Hamlin says of her medal, "It's surreal, really."

In a major address, Hassan Rouhani mocked U.S. military threats. But he also used the 35th anniversary of the Islamic revolution to say that negotiations with the U.S. and others offers the best path for Iran.

Nearly three years after the federal government issued guidelines for dealing with sexual misconduct on campus, administrators are meeting at the University of Virginia to discuss problems and progress. As Sandy Hausman of member station WVTF reports, leaders in higher education say they're struggling to understand and manage sexual assaults in the age of "hooking up."

Janet Yellen made her first appearance before Congress as chair of the Federal Reserve on Tuesday. Her remarks, released prior to her testimony, stressed that there would be a lot of continuity with past policies, because she had helped develop and implement them.

The astronauts aboard the International Space Station give us a view of the Olympics that we haven't seen.

There have been five major mass extinctions over the last half-billion years, when the diversity of life on Earth suddenly and dramatically contracted. Scientists are currently monitoring an era of mass extinction predicted to be the most devastating since the asteroid impact that wiped out the dinosaurs. But this time around, says Elizabeth Kolbert, author of The Sixth Extinction, it's humans that are causing it.