Environment

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A soldier stands guard outside May Day stadium during the Arirang festival in Pyongyang, North Korea, on Saturday, Oct. 9, 2010. North Korea's government used one of its most visible propaganda tools -- mass performances in a Pyongyang stadium -- to demonstrate its closeness to China as the Stalinist state embarks on a leadership change. Photographer: Dieter Depypere/Bloomberg

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On Monday, Oct. 11, 2010, a man working on the rescue of the 33 miners trapped at the San Jose mine near Copiapo, Chile, shows one of the pairs of overalls the miners will wear during their ascent to the surface. (AP Photo/Natacha Pisarenko)

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Victims bodies lie at the side of the track at the scene of an accident outside the town of Marhanets, Ukraine, Tuesday, Oct. 12, 2010 after the bus attempted to cross the track, ignoring a siren that indicated an oncoming train. At least 40 people were killed officials at the Ministry of Emergency Situations said. Another eleven people were injured. Road and railway accidents are common in Ukraine, where the roads are in poor condition, vehicles are poorly maintained, and drivers and passengers routinely disregard safety and traffic rules. (AP Photo)

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Victims bodies lie at the side of the track at the scene of an accident outside the town of Marhanets, Ukraine, Tuesday, Oct. 12, 2010 after the bus attempted to cross the track, ignoring a siren that indicated an oncoming train. At least 40 people were killed, officials at the Ministry of Emergency Situations said. Another eleven people were injured. Road and railway accidents are common in Ukraine, where the roads are in poor condition, vehicles are poorly maintained, and drivers and passengers routinely disregard safety and traffic rules. (AP Photo)

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People react at the scene of an accident outside the town of Marhanets, Ukraine, Tuesday, Oct. 12, 2010 after a bus attempted to cross the track, ignoring a siren that indicated an oncoming train. At least 40 people were killed officials at the Ministry of Emergency Situations said. Another eleven people were injured. Road and railway accidents are common in Ukraine, where the roads are in poor condition, vehicles are poorly maintained, and drivers and passengers routinely disregard safety and traffic rules. (AP Photo)

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RESCUE READY: Air Force Pararescueman Alejandro Serrano with the 46th Expeditionary Rescue Squadron test-fires his weapon over Kandahar province in case it's needed during casualty-pickup missions in Afghanistan. (Associated Press)

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ASSOCIATED PRESS WJZ-TV anchor Denise Koch, center, moderates a debate between Maryland gubernatorial candidates former Republican former Gov. Robert Ehrlich, left, and Democratic incumbent Gov. Martin O'Malley right, in Baltimore, Monday, Oct. 11, 2010.

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Maryland Democratic incumbent Gov. Martin O'Malley makes a point during a gubernatorial debate against former Republican Gov. Robert Ehrlich, Monday, Oct. 11, 2010, in Baltimore. (AP Photo/Rob Carr)

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Former Maryland Republican Gov. Robert Ehrlich makes a point during a debate against Maryland gubernatorial candidate Democratic incumbent Gov. Martin O'Malley, Monday, Oct. 11, 2010, in Baltimore. (AP Photo/Rob Carr)

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Former Maryland Republican Gov. Robert Ehrlich makes a point during a debate against Maryland gubernatorial candidate Democratic incumbent Gov. Martin O'Malley, Monday, Oct. 11, 2010, in Baltimore. (AP Photo/Rob Carr)

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Maryland Democratic incumbent Gov. Martin O'Malley makes a point during a gubernatorial debate against former Republican Gov. Robert Ehrlich, Monday, Oct. 11, 2010, in Baltimore. (AP Photo/Rob Carr)

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A Hungarian soldier, wearing protective gear, looks on while cleaning streets covered by toxic red sludge in Devecser, Hungary, Monday, Oct. 11, 2010. The population of the neighboring town of Kolontar was evacuated Saturday and Devecser with a population of 5,300 is also in the likely path of a possible new sludge deluge. Hungary's prime ministers says police have taken into custody the managing director of the company which owns the metals plant where a broken reservoir flooded several towns with toxic red sludge and water.(AP Photo/Bela Szandelszky)

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A Hungarian firefighter wearing protective mask and clothing stands guard at the red sludge reservoir, where a rupture caused deadly sludge flood in Kolontar, Hungary, Sunday, Oct. 10, 2010. The population of Kolontar was evacuated Saturday, and the neighboring town of Devecser with a population of 5,300 is also in the likely path of a new sludge deluge. (AP Photo/Bela Szandelszky)

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A Hungarian soldier and a volunteer, wearing protective gears, walk across a street covered by flooded toxic red sludge in Devecser, Hungary, Monday, Oct. 11, 2010. Hungary's prime ministers says police have taken into custody the managing director of the company which owns the metals plant where a broken reservoir flooded several towns with toxic red sludge and water.(AP Photo/Bela Szandelszky)

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Hungarian soldiers, wearing protective gears, wash each others after cleaning streets covered by flooded toxic red sludge in Devecser, Hungary, Monday, Oct. 11, 2010. (AP Photo/Bela Szandelszky)

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Hungarian soldiers, wearing protective gears, wash each others after cleaning streets covered by flooded toxic red sludge in Devecser, Hungary, Monday, Oct. 11, 2010. (AP Photo/Bela Szandelszky)

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Maryland Democratic incumbent Gov. Martin O'Malley makes a point during a gubernatorial debate against former Republican Gov. Robert Ehrlich, Monday, Oct. 11, 2010, in Baltimore. (AP Photo/Rob Carr)

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Former Maryland Republican Gov. Robert Ehrlich makes a point during a debate against Maryland gubernatorial candidate Democratic incumbent Gov. Martin O'Malley, Monday, Oct. 11, 2010, in Baltimore. (AP Photo/Rob Carr)

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The first residents evacuated from Kolontar, Hungary, which was inundated by toxic red sludge from an alumina plant on Monday, arrive at a temporary shelter set up in the Sports Hall of Ajka on Saturday, Oct. 9, 2010. Police and army officials evacuated the residents on Saturday because of new signs of damage that have appeared on the dam of the red-sludge reservoir at the nearby Ajka aluminium plant. (AP Photos/MTI, Lajos Nagy)