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President Barack Hussein Obama began his second term Monday with an ardent defense of government as essential to the nation's economic and moral fiber.

New evidence suggests UC San Diego researchers are on the right track in their search for a lost Leonardo da Vinci painting they believe is hidden behind another mural in the Palazzo Vecchio in Florence, Italy.

Is the federal government doing enough to ensure sound scientific research? What promises do stem cells offer for curing disease? Is genetic testing good for the consumer? Should parents continue t

A rice enriched with beta-carotene promises to boost the health of poor children around the world. But critics say golden rice is also a clever PR move for a biotech industry driven by profits, not humanitarianism.

The Changing Demographics of Comic-Con

Was Homer Simpson Running The Fukushima Power Station?

Now that Republicans are widely embracing an overhaul of immigration laws, even a path to legal status for illegal residents, will their members in Congress follow through?

Latest From Director of 'Moon'

Once excited about the prospect of their first, free presidential elections, Egyptian voters are growing frustrated. Many don't know who the candidates are or what they stand for. And the recent disqualification of 10 candidates has only complicated the race.

Saudi Arabia's strategy on climate change has long been to deny the science. Saudis fear that reducing emissions will reduce oil exports and be catastrophic for their economy.