Environment

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K. Hovnanian Homes is building 41 single-family homes on quarter-acre sites at Belmont Crest in Upper Marlboro. The Delaware model, with 3,021 square feet, is priced from $415,990.

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Protesters outside the British Embassy in Buenos Aires sit in front of a wall that includes images of the Falkland Islands with the declaration "They are Argentina's. Argentina is trying to get Britain to negotiate Falklands sovereignty at the United Nations, but instead, Britain is sending more military support to the archipelago. (Associated Press)

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A scene from the History Channel's "Swamp People." Since the show's 2010 premiere, about a dozen other Louisiana-based reality shows have come to TV. (History Channel via Associated Press)

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Sean Penn (left) raises a glass with Haiti's President Michel Martelly (right) and Foreign Minister Laurent Lamothe in Port-au-Prince after Mr. Penn was named ambassador at large because of his humanitarian work since the 2010 earthquake. (Associated Press)

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Greek Finance Minister Evangelos Venizelos speaks during a news conference in Athens on Tuesday, Jan. 31, 2012. (AP Photo/Petros Giannakouris)

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Former Sen. Rick Santorum of Pennsylvania, a Republican presidential candidate, speaks during a campaign stop at the Lone Tree Golf Club in Lone Tree, Colo., on Tuesday. (Associated Press)

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Randy Edsall was 2-10 in his first season. It was just the second 10-loss season in Maryland history. (Associated Press)

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** FILE ** International Atomic Energy Agency experts Jozef Misak (third from right) and Charles Casto (second from right) walk past an emergency air-cooled power generator as they inspect the Ohi nuclear power plant in Ohi, Fukui prefecture, Japan, on Thursday, Jan. 26, 2012. (AP Photo/Shizuo Kambayashi, File)

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** FILE ** Steam vapor rises from the cooling towers of Exelon Corp.'s nuclear plant in Byron, Ill, in March 2011. (AP Photo/Robert Ray, File)

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Courtesy of Topps, here's the image that will appear on Michael Morse's trading card for the 2012 season.

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Former House Speaker Newt Gingrich, a Republican presidential candidate, and his wife, Callista, campaign at the Villages in Lady Lake, Fla., on Sunday. (Associated Press)

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President Barack Obama waves as he walks off of Marine One on the South Lawn of the White House in Washington, Friday, Jan. 27, 2012. (AP Photo/Susan Walsh)

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North Carolina Gov. Bev Perdue, here at a Freightliner plant in Cleveland, N.C., has announced she will not run for re-election. Her approval ratings have been around 40 percent, and she faced a tough rematch against her 2008 opponent. (Associated Press)

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Residents retrieve belongings in December after authorities demolished their unauthorized houses in northeastern Delhi, which contains India's most crowded neighborhoods. Some homes are made of a single layer of brick, with extra floors added without support for the weight. Below, narrow streets are lined by buildings jammed together. Experts say a major earthquake is likely to hit the city, but next to nothing has been done to prepare for it, in part because of poverty. (Associated Press)

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**FILE** North Carolina Gov. Beverly Perdue wears a Freightliner hat as she smiles Jan. 12, 2012, during a news conference at a Freightliner plant in Cleveland, N.C. (Associated Press)

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An inspector with Washington Gas finds a basement furnace to be the source of a carbon monoxide leak that sent three persons to the hospital, one in critical condition, for carbon monoxide poisoning at 1721 P St. N.W., Washington, D.C., Thursday, Jan. 26, 2012. A friend of the owner on the scene said that the furnace had recently been worked on. (Andrew Harnik/The Washington Times)

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M/I Homes is building 47 town homes at Station View in Ashburn. The homes have 2,329 to 2,350 finished square feet, with base prices from $389,990 to $394,990.

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The home at 101 River Forest Lane in the Tantallon on the Potomac community in Fort Washington is on the market for $1,100,000. The six-bedroom home was built in 1987.

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The center-island kitchen in the Griffin model at the Legacy at Manning Village has an adjacent breakfast area.

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**FILE** The string of islands known as Senkaku islands in Japanese, and Diaoyu in Chinese, are seen here Sept. 29, 2010. Relations between China and Japan were strained when a Chinese fishing boat collided with Japanese patrol vessels earlier that month near the islands in the East China Sea that are claimed by both countries as well as Taiwan. (Associated Press)