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Our closest relatives, chimpanzees and gorillas, breast-feed their offspring for several years. Some baby orangutans nurse until they are 7 years old. Researchers found a way to test ancient teeth for clues about when humans cut nursing short.

The Venezuelan president remains in Cuba, receiving treatment for cancer. His supporters — with the backing of the Supreme Court — say that he can be sworn in at a later date.

In Afghanistan, governors are not elected, they are selected — and more often than not due to family or political connections. But in an attempt to curb graft, the country has just sworn in a batch of governors — including the first female district governor — selected through a new merit-based program.

Buster Keaton, the great genius of silent comedy, gets celebrated in a 14-disc box set that contains all of his classic silent comedies as well as a raft of shorts and extras.

A new study of the Barnett Shale formation in Texas shows that the natural gas reservoir there will last for at least another two decades. "Turns out, what we learned is that there's a lot of good rock left to drill," says geology professor Scott Tinker, the study's author.

Known for his work in New Klezmer Trio, clarinetist Ben Goldberg has just released two new albums for different quintets: Subatomic Particle Homesick Blues and Unfold Ordinary Mind.

A team of scientists has discovered that dung beetles climb on dung balls and dance around in circles before taking off. This dance is not one of joy, however — the insects are checking out the sky to get their bearings. Melissa Block and Audie Cornish have more.

The attack at a Black Sea resort town last July killed five Israeli tourists and one Bulgarian citizen. In response, the White House called Hezbollah, the Lebanese militant group, a "real and growing threat not only to Europe, but to the rest of the world."

The company's CEO said Boeing plans to keep building its new 787s while it awaits the outcome of investigations into the cause of a fire and overheating aboard the planes. But some analysts are skeptical about continuing the assembly line before the results are in.

Boeing is scrambling to figure out why two batteries malfunctioned on its 787, causing officials to ground the airplane this month. And at a time when Boeing most needs its skilled engineers, they're weighing a possible strike. Union leaders are considering the company's final contract offer Thursday.