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.
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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
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.
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.
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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
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.
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