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Humans have complicated genetic structures — not so dogs. Almost every physical trait in canines is controlled by just a few genes, which means custom-breeding a dog is only a matter of flipping a few genetic switches.

Republican presidential candidate Mitt Romney is campaigning in Florida following a big loss over the weekend to Newt Gingrich in the South Carolina primary. Romney told a crowd that Gingrich resigned in disgrace after four years as speaker of the House.

The two men who helped turn the BlackBerry into a device many people can't live without have stepped aside. Research in Motion is the company behind the BlackBerry and Sunday its co-CEOs resigned. They were under a lot of pressure as investors wonder whether the Canadian firm can turn itself around and compete better with flashier phones like the iPhone.

Court opinions are usually not that exciting but a judge in Chicago is trying to liven up his rulings with illustrations. In one, he used an iconic photo of Bob Marley. The case was about a prisoner's right to keep his dreadlocks on religious grounds.

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.

Sue Freeman, 78, is one of two women who appear to have unexpectedly regained some of their vision while taking part in a study testing the safety of an embryonic stem-cell therapy. The findings, if confirmed, could mark a landmark step in stem cell therapy, but everyone involved in the work is being very cautious about how they describe these results.

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

President Obama rejected Wednesday a proposal to build the Keystone XL oil pipeline from Canada to the U.S. Gulf Coast — generating intense debate in both countries. Murray Mandryk, political columnist for the Leader-Post of Sasketchewan, offers a Canadian perspective on the controversy.

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.

Staff Sgt. Frank Wuterich pleaded guilty to dereliction of duty, which carries a maximum sentence of three months confinement.