Environment

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ASSOCIATED PRESS PHOTOGRAPHS Soldiers scramble during clashes Wednesday with relatives of inmates after a deadly prison fire in Comayagua, Honduras. As many as 350 inmates are missing and presumed dead and at least 21were injured in the blaze, authorities said.

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In this illustration provided by the Swiss Space Center of the Swiss Federal Institute of Technology (EPFL) Feb. 15, 2012, the CleanSpace One is chasing its target, one of the CubeSats launched by Switzerland in 2009. (Associated Press/HO/T EPFL/Swiss Space Center)

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Greek Finance Minister Evangelos Venizelos (center) speaks Feb. 15, 2012, to the press after a meeting with the Greek President Karolos Papoulias in Athens. (Associated Press)

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**FILE** Tsunami waves gush March 11, 2011, into a complex near the Unit 4 reactor at the Fukushima Dai-ichi nuclear complex in Okuma twon, Fukushima Prefecture, northeastern Japan. (Associated Press/Tokyo Electric Power Co.)

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A bomb specialist examines debris Tuesday in Bangkok where two explosions rocked a neighborhood. An Iranian man injured by a grenade he was carrying also was linked to a blast that ripped part of a roof off a house. (Associated Press)

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A man walks past an iPad2 advertisement in Shanghai on Monday. A Chinese company will ask customs officials to ban imports and exports of Apple Inc.'s iPads. (Associated Press)

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The Surface Transport Traffic Control Center in London will be the nerve center for coordinating traffic during the Olympic Games. Ambulances, which are expecting an increase in demand, have particular fears about traffic not moving. (Associated Press)

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The Olympic Village, a construction zone a year ago, will house many of the 15,000 athletes coming to London this summer for the 2012 London Games. Traffic officials fear gridlock along the 100-mile Olympic Route Network of traffic lanes reserved for athletes, sponsors and dignitaries. (Olympic Delivery Authority via Associated Press)

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The winning ticket in a $336.4 million Powerball jackpot was purchased at this Stop & Shop supermarket in Newport, R.I. (AP Photo/The Daily News, Dave Hansen)

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A firefighter extinguishes smoldering flames at one of the oldest cinemas in Athens on Monday, Feb. 13, 2012, following a night of rioting after Greek lawmakers approved harsh new austerity measures demanded by bailout creditors to save the debt-crippled nation from bankruptcy. (AP Photo/Petros Giannakouris)

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** FILE ** Gabe Watson (left) and Tina Thomas pose during their engagement. (AP Photo/Townsville [Australia] Coroners Court, File)

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Argentine President Cristina Fernandez speaks Feb. 7, 2012, during a national address while standing in front of a Falklands Islands' map at Government Palace in Buenos Aires. (Associated Press)

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Southern Company official Thomas A. Fanning called the Nuclear Regulatory Commission's approval of two nuclear reactors "a monumental accomplishment for Southern Company, Georgia Power, our partners and the nuclear industry. (Associated Press)

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** FILE ** Steam rises from the cooling towers of nuclear reactors at Georgia Power's Vogtle plant in Waynesboro, Ga., in April 2010. The Nuclear Regulatory Commission on Thursday, Feb. 9, 2012, approved the construction of two new nuclear units at the Vogtle site — the first new reactors in the United States in 30 years. (AP Photo/Mary Ann Chastain, File)

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Beazer Homes is developing the Gatherings at Wellington, which includes 81 condominium homes in three buildings in Manassass. The two-bedroom, two-bath homes have 1,448 to 1,886 square feet and are priced from $209,990 to $292,990. Monthly condominium fees start at $219.

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Winchester Homes is building 134 town homes at Stratshire Crossing in Aldie. The homes have approximately 2,100 to 2,600 finished square feet, with base prices from $316,900 to $384,900.

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Employees of the electricity utility Public Power Corp. shout slogans in front of the Greek Parliament on Syntagma Square in Athens to protest the Greek government's plans to privatize part of the power distribution service. The banner reads, ''We resist.'' (AP Photo/Thanassis Stavrakis)

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Russian researchers at the Vostok station in Antarctica pose for a picture Feb. 5, 2012, after reaching subglacial lake Vostok, a major scientific discovery that could provide clues for search for life on other planets. Scientists hold a sign reading "05.02.12, Vostok station, boreshaft 5gr, lake at depth 3769.3 metres." (Associated Press/Arctic and Antarctic Research Institute Press Service)

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**FILE** The Russian drilling machine 5-G is seen Jan. 9, 2007, in Antarctica. (Associated Press/Arctic and Antarctic Research Institute Press Service)