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Climate change has caused rapidly melting ice and thawing permafrost in the Arctic. Once inhospitable to business ventures, economic forecasters are now predicting some $100 billion will be invested there over the next decade. NPR's Arun Rath talks with Isaac Arnsdorf of Bloomberg about the boom.

Even where there is peace, there is distrust, as the country divides along ethnic lines. In the government-controlled capital, members of the Nuer ethnic group are seeking protection in a U.N. camp.

Brain training has become a multimillion-dollar industry. But if you want to improve your memory, don't waste your time and money on brain games. You'd be better off learning how to quilt.

Going into midterm elections, this key demographic poses a big challenge for Democrats: getting their most reliable female supporters to become more reliable voters.

MIT neuroscientist Sebastian Seung (now at Princeton) invented the game to help him make a map of the cells in the mammalian retina. A year later, he says the game is producing valuable science.

The Obama administration is trying to gain more support for a bipartisan bill to dramatically reshape the housing finance industry. Others say the bill would weaken affordable housing regulations.

Warren Buffett is under fire for not opposing Coca-Cola's executive compensation plan more aggressively. Buffett spoke about his decision at a shareholder meeting for his company Berkshire Hathaway.

Cops worldwide are getting savvy about social media, branching out beyond Facebook to solve everything from murder cases to thefts.

Mort Raphelson, 92, was on that ship 70 years ago when it was sunk by a German U-boat. Divers presented him with two bowls recovered from the wreck.

President Goodluck Jonathan said security forces did not know where the more than 200 abducted girls are being held. He promised the government would "get them out."