Disaster_Accident

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Vehicles clog the downtown streets of the District of Columbia on Wednesday. Icy roads created hazardous travel conditions for President Obama as he returned to the White House after a trip to Wisconsin. His driver spent an hour weaving through rush-hour traffic. (Associated Press)

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A vehicle lies on the side of the road along Kelly Drive during a winter storm in Philadelphia on Wednesday. The Philadelphia area could get 4 to 8 inches, and high winds are expected before the storm moves out early Thursday. (Associated Press)

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Flowers mark the site Tuesday of carnage from a blast at Domodedovo Airport near Moscow as passengers wait be checked in. Security was tightened after a suicide bomber detonated explosives that ripped through Moscow's busiest airport Monday, killing at least 35 people. (Associated Press)

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Farmers clean rice fields covered in muddy water believed to be contaminated by the cholera bacteria in Saint-Marc, Haiti, Saturday Jan. 22, 2011. The cholera epidemic that killed nearly 4,000 people, is claiming fewer victims, with a sharp drop in new cases everywhere from the Artibonite Valley to the crowded urban slums. (AP Photo/Rodrigo Abd)

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Thomas Carper, chairman of Amtrak's board of directors, is under fire from a California congressman, who is calling for his ouster, along with that of the passenger-rail service's general counsel. (Associated Press)

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A woman suffering cholera symptoms is carried to a local hospital in Limbe village near Cap Haitien, Haiti, in November. In 2010, crisis piled upon crisis in Haiti. More than 230,000 are believed to have died in the quake, and more than a million remain homeless. A cholera epidemic broke out in the fall, and a dysfunctional election was held, its results still unclear. (Associated Press)

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A rice farmer eats his lunch while sitting in a field covered in muddy water thought to be contaminated by the cholera bacteria in Saint-Marc, Haiti, on Saturday. The cholera epidemic that killed nearly 4,000 people is claiming fewer victims with a sharp drop in new cases everywhere from the Artibonite Valley to the crowded urban slums. (Associated Press)

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** FILE ** Passengers check in for their flights at Domodedovo Airport outside Moscow in April 2010. An explosion on Monday, Jan. 24, 2011, ripped through the arrivals hall at the airport, the city's busiest, killing at least 31 and wounding 130 others, Health Ministry officials said. The state RIA Novosti said the explosion may have been caused by a suicide bomber. (AP Photo/Misha Japaridze)

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Laura Brenner shares a laugh with her adopted daughter, Ketia, 9, at their home in Seattle. Ketia was one of 54 children rescued from the horrific aftermath of the Jan. 12 earthquake last year in Haiti. (Associated Press)

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Colorado Avalanche left wing Tomas Fleischmann, of the Czech Republic, tries to flip the puck past New York Islanders goalie Kevin Poulin in the second period of an NHL hockey game in Denver, Colo., on Saturday, Jan. 8, 2011. The Islanders won 4-3 in overtime. (AP Photo/Chris Schneider)

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In this Tuesday, Jan. 18, 2011, photo provided by the State Emergency Service and made available Wednesday Jan. 19, 2011, a levee is in place around a power substation in an attempt to hold back water from the swollen Loddon River at Kerang, Australia. Up to 1,500 homes in Kerang, in the north of Victoria state, could be affected if the Lodden River rises any further. (AP Photo/SES, Rodney Dekker)

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Toll Bros. is building 2,700 single-family homes on 6,900-square-foot sites at the Villages at Loudoun Valley in Ashburn. The homes have 3,196 to 3,366 finished square feet, with base prices from $509,995 to $527,995.

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The Putnam model at the Villages at Loudoun Valley in Ashburn has an open center-island kitchen, breakfast area and family room at the back of the home. The Putnam has 3,196 square feet and is priced from $509,995.

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Richmond American Homes is building 69 single-family homes on quarter-acre homesites at Saint Charles in St. Charles. The homes have 1,992 to 2,736 finished square feet, with base prices from $289,990 to $334,990.

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Construction of new homes continues in the Vista Del Sol section of the planned community of Monterra, in Cooper City, Fla. Tuesday, Jan 18, 2011. Builders began work last year on the second fewest number of homes in more than half a century, as the weak economy kept people from buying houses.(AP Photo/J Pat Carter)

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People in Jafarabad, 300 kilometers north of Quetta, Pakistan, pray outside their homes as a severe earthquake hits the area on Wednesday morning. The 7.2-magnitude quake shook many parts of the country and caused tremors as far away as India and the United Arab Emirates. (Associated Press)

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Mark Kelley, who lives on the Coeur d'Alene River near Enaville, Idaho, pauses as he stands next to his vehicle in frigid waist-deep flood water Monday, Jan. 17, 2011, as a towing services uses a winch to pull his 1992 Jeep Cherokee up his driveway. Warm temperatures and steady rain has caused flooding and prompted evacuations in the area. (AP Photo/Coeur d'Alene Press, Shawn Gust)

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People attempt to navigate East Lolo Pass after heavy weekend rain caused the flooding of the Sandy River and left the road in ruin in Zigzag, Ore., Monday, Jan. 17, 2011. (AP Photo/The Oregonian, Torsten Kjellstrand)

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Cars are left stranded on East Lolo Pass, after heavy weekend rain caused the flooding of the Sandy River and washed out the road, in Zigzag, Ore., Monday, Jan. 17, 2011. (AP Photo/The Oregonian, Torsten Kjellstrand)

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Waters of the Sandy River flow down East Lolo Pass in Zigzag, Ore., Monday, Jan. 17, 2011. The rains in Oregon were pushing some rivers and streams over their banks at a time when many waterways were rising because of warming temperatures and melting snow, with some rivers reaching flood stage and more were expected to rise above that level. (AP Photo/The Oregonian, Torsten Kjellstrand)