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U.S. Army Spc. Tyler Jeffries lost both legs in a roadside bombing last October in Afghanistan, and he has been learning to walk on prosthetic legs. But Jeffries was determined to meet his buddies when they returned from duty in January.

As the president and House speaker try to lead the nation away from the so-called fiscal cliff, experts in the art of negotiation say they're not impressed. "Much of this process is theater," says one. "I think that now, everyone needs to shut up and get to work."

The GOP could pick up as many as five governorships in next month's election, bringing the party's total to 34, the most since 1922.

Alan Alda founded The Flame Challenge last year to promote better science communication, and he started by asking scientists to come up with a kid-friendly explanation for a flame. Now, Alda is back with round two of the popular contest, and kids want to know: What is time?

"Subsistence mining" is now believed to be the single largest sector for employment. But the work is arduous, windfalls are rare, and miners complain that Chinese companies exploit them.

Justin Timberlake rocketed to stardom as a teen heartthrob in the band 'N Sync. He has gone on to be a successful solo artist — and expanded his career into both comedic and dramatic roles on-screen. He discusses his long career in showbiz, his SNL digital shorts and his transition to film.

Deep in the Amazon, an isolated Brazilian tribe almost vanished when it first had contact with the modern world. Now the Surui tribe is working with Google to do things like report on illegal logging in the forest.

Dallas is home to more than 40 people who've been released from prison for wrongful convictions. Some of those men have formed not just a support group, but a detective agency devoted to getting other innocent people out of prison.

When people think of potentially destructive global businesses, tourism may not come to mind. But Elizabeth Becker, author of Overbooked: The Exploding Business of Travel and Tourism, says the industry is spoiling the landscape and the economic future of many vulnerable nations.

For her new book, Gran Cocina Latina, chef Maricel Presilla visited homes and restaurants across Latin America to document their food. But one dish familiar to Americans, the sauce often served with Cuban-style yuca fries, has a surprising origin — Presilla herself.