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Coal is poised to replace oil as the world's top energy source — possibly in the next five years, according to the International Energy Agency. The rise will be driven largely by growth in China and India, the IEA says, while the only large decline is seen coming in the United States.

Congress is considering whether to turn three top-secret sites involved with creating the atomic bomb into one of the country's most unusual national parks. Critics question the need for a park that celebrates nuclear weapons. Supporters say the park would ask tough questions about lessons learned.

Reporting in the journal Biology Letters, Jeremy Goldbogen and colleagues say blue whales perform underwater acrobatics when they're eating: they rotate 360 degrees while they gulp krill. Reaching 90 feet in length, blue whales are the largest animals on the planet. Goldbogen is studying their dining habits to understand what fuels their growth.

Could an actress and political activist with no electoral experience give the Senate's top Republican a race in very red Kentucky? It would be a long shot, say political experts, even though Judd has deep roots in the state, calling herself an "at least 8th generation Eastern Kentuckian."

The Obama administration is expected to ask for $50 billion to $60 billion. Top administrators told Congress Wednesday that they want at least some of that money to go toward preventing the kind of devastation caused by Sandy and other recent storms.

After President Obama and House Speaker John Boehner's face-to-face meeting, there's talk about an agreement soon being struck. But every such analysis also comes with many caveats.

The world's top health problems are more common in men than women. But recent global funding has been skewed toward women's issues. Some health economists say more effort should go toward stopping men's risky behaviors, like smoking and drinking.

The U.S.-China economic relationship is under pressure again with allegations from the House Intelligence Committee that two top Chinese telecom firms are security threats. China responded by saying the report could damage relations with the U.S.

What happens when you take a group of junior high kids from a school with a poverty level of more than 65 percent and teach them how to play chess? Katie Dellamaggiore's documentary, Brooklyn Castle, explores the amazing results.

Energy production, military realignment, Hispanic immigration, student enrollment and changing retirement patterns are among the forces driving population gains in America's fastest-growing counties.