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Previous estimates of the climate-warming gas were based on the rough number of methane-emitting sources on the ground — such as factories, refineries, stoves, swamps, landfills and cattle herds. But by directly measuring levels of methane in the air instead, a new study puts the total much higher.

David Greene talks with Sylvain Groulx, head of mission for Doctors without Borders in the Central African Republic, about the state of the violence there and the hopes for peace now that French troops have arrived.

Medical tourism was expected to be huge in 2013, and countries like Colombia, which has seen huge improvements in safety and tourism, decided they wanted in on the action. In recent years they've been building facilities specifically designed for medical tourists. But the numbers have not quite met projections.

Morning Edition reports on the music that sustained Nelson Mandela and other members of the anti-apartheid movement while they were in a South African prison. Many of them were huge reggae fans.

Nationwide, many cash-strapped cities have raided funds intended for retirees or have chronically underfunded their pension systems. But despite a budget crunch, Milwaukee's fund has consistently ranked among the nation's top pension programs. Even so, some changes lie ahead for city workers.

A pair of con artists and their FBI wrangler go after political corruption in American Hustle, inspired by the Abscam scandal of the '70s. Critic David Edelstein says the film, directed by David O. Russell, is "a bit of a hustle itself" — and still a hell of a ride. (Recommended)

Sophie Varon loves to shop. The store Forever 21 is her weakness. And lately, she's been wondering if her shopping habit has become a shopping problem.

Soon after they arrived on U.S. shores, The Beatles infiltrated just about every part of American pop culture — including lunchboxes. Fans have been known to shell out more than $1,000 for an authentic 1960s lunchbox featuring the band.

Serving chicken, pigeon or duck for the holiday may be harder this year for some families in China and Hong Kong. As the deadly H7N9 virus continues to spread, officials in China have closed many live poultry markets, while agricultural workers in Hong Kong plan to cull thousands of chickens this week.

President Obama is meeting with heads of state from Canada and Mexico. These North American neighbors are often called the "three amigos." They are expected to talk about trade and border security.