Former Speaker of the House Newt Gingrich and former Massachusetts Gov. Mitt Romney chat after finishing a GOP debate in Sioux City, Iowa, earlier this month.
Scott Olson/Getty Images
hide caption
Eric Goosby, United States Global AIDS coordinator, says field testing is necessary and urgent to determine if HIV testing-and-treating services are feasible.
Brendan Hoffman/Getty Images
hide caption
Unfinished subdivisions like this one in the Phoenix suburb of Gilbert, Ariz., have led urban planners to suggest "smart decline" strategies that sometimes even dismantle existing infrastructure.
Laura Segall/Bloomberg via Getty Images
hide caption
A group of harbor porpoises in San Francisco Bay, photographed from the Golden Gate Bridge. Harbor porpoises haven't been seen in the bay since the 1930s. Researchers believe World War II activity may have contributed to their disappearance. The Navy strung a seven-mile underwater net across the mouth of the bay to keep out enemy submarines.
William Keener/Golden Gate Cetacean Research
hide caption
An ultra-Orthodox Jewish man (left) and a secular man argue during a protest against the strict religious codes favored by the ultra-Orthodox in the Israeli city of Beit Shemesh.
Stringer/Reuters/Landov
hide caption
Reason To Smile: Samuel Palmisano, president and CEO of IBM, walks by an IBM logo at the CeBIT technology fair in Hanover, Germany. Palmisano is set to step down later this month, and Virginia Rometty will take over on Jan. 1.
Sean Gallup/Getty Images
hide caption
This photo provided by Korean Central News Agency (KCNA) shows Kim Jong Un, center, with his hand on the limousine bearing his father Kim Jong Il's body during the funeral procession in Pyongyang.
Korean Central News Agency
hide caption
Michael Haley of the New York Islanders fights Stu Bickel of the New York Rangers in the first period of an NHL game at Madison Square Garden in New York City, Dec. 26.
Paul Bereswill/Getty Images
hide caption
