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Climate simulations show that massive technological interventions, known as "geoengineering," could protect food crops from some of the damaging effects of global warming. But researchers say local effects are hard to predict, so geoengineering may not be worth the risk.

Just before Christmas, Amazon infuriated booksellers with an app that allowed customers to check out prices in brick-and-mortar stores and then get a discount if they bought from Amazon instead. Now publishers and booksellers are looking for new ways to compete with the Goliath of online retailers.

In rural Minnesota, listener Veronica Horton made her own fun by dancing to Ernie Ford's classic song.

The Inquisition revolutionized record-keeping and surveillance techniques that are still used today, says Cullen Murphy. His new book God's Jury draws parallels between some of the interrogation techniques used in previous centuries with the ones used today.

The superstar pianist and a Mongolian children's choir perform traditional songs for the Chinese New Year.

The Ely, Minn. black bear became an Internet sensation after a webcam was placed in her den.

President Barack Obama delivers his third State of the Union speech in the House chambers Tuesday night. In his 2012 address, he is expected to focus on jobs and the government's efforts to boost the economy and reduce economic inequality.

More than a decade after the U.S. charged into Afghanistan, American troops are still in the lead combat role. But with the U.S. military planning to withdraw by the end of 2014, the Americans now want to see Afghan troops at the forefront of the fighting.

Penn State football coach Joe Paterno died Sunday at the age of 85. The legendary coach's reputation was deeply tarnished after sex abuse charges were filed against a former assistant coach. Writers and fans continue to debate how Paterno should be remembered.

Women don't suffer in silence. They report feeling more pain than men from such common conditions as ankle sprains and sinus infections, a Stanford study finds. A better understanding of gender differences in pain could lead to better treatments.