Environment

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From left, Anne Costner, Pat Smith, COO Ocean Therapy Solutions, John Houghtalking, CEO of Ocean Therapy Solutions, actor Kevin Costner, founding partner of Ocean Therapy Solutions and Doug Suttles, COO of BP Exploration and Production, talk aboard the barge holding Ocean Therapy's centrifuge machine designed to separate oil and water in Port Fourchon, La. Friday, June 18, 2010. (AP Photo/Cheryl Gerber, Pool)

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President Obama waves as he tours a Recovery Act highway project in Columbus, Ohio, Friday, June 18, 2010. (AP Photo/Charles Dharapak)

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A man stands next to the coffins of four miners killed at a coal mine in Amaga, northwestern Colombia, Friday, June 18, 2010. Dozens of miners were trapped and feared dead after a fiery blast tore through a tunnel in a Colombian coal mine during a shift change, killing at least 16 workers. (AP Photo/William Fernando Martinez)

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A large funnel cloud touches down west of Albert Lea, Minn., early evening Thursday, June 17, 2010. The tornado was traveling northeast. Several tornadoes were reported in southern Minnesota and northern Iowa Thursday evening, causing three deaths and major property damage. (AP Photo/The Globe-Gazette, Arian Schuessler)

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Josette Ranpont cleans her home in Draguignan, France, on Wednesday, June 16, 2010 after flash floods hit southeastern France. Regional authorities say more than a dozen people have been killed and many are missing in the aftermath of the floods, which followed powerful rainstorms. Unusually heavy rains recently in the Var region have transformed streets into muddy rivers that swept up trees, cars and other objects. (AP Photo/Claude Paris)

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Kyrgyz soldiers are alert atop an armored personal carrier patrolling the outskirts of the southern Kyrgyz city of Osh in Kyrgyzstan on Thursday, June 17, 2010, with a humanitarian convoy behind the truck. Hundreds of thousands of Uzbeks fled their homes seeking refuge in neighboring Uzbekistan after deadly rampages by mobs of ethnic Kyrgyz. (AP Photo/Alexander Zemlianichenko)

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The river Artuby floods Draguignan, southern France, Wednesday, June 16, 2010. Regional authorities in southeastern France say at least a dozen people have been killed and many are missing in the aftermath of flash floods that followed powerful rainstorms. Unusually heavy rains recently in the Var region have transformed streets into muddy rivers that swept up trees, cars and other objects. (AP Photo/Lionel Cironneau)

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A rescue truck is seen in Draguignan, southern France, Wednesday, June 16, 2010. Regional authorities in southeastern France say more than a dozen people have been killed and many are missing in the aftermath of flash floods that followed powerful rainstorms. Unusually heavy rains recently in the Var region have transformed streets into muddy rivers that swept up trees, cars and other objects. (AP Photo/Lionel Cironneau)

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Damaged cars pile up in Draguignan, southern France, Wednesday, June 16, 2010. Regional authorities in Southeastern France say more than a dozen people have been killed and many are missing in the aftermath of flash floods that followed powerful rainstorms. Unusually heavy rains recently in the Var region have transformed streets into muddy rivers that swept up trees, cars and other objects. (AP Photo/Lionel Cironneau)

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A woman walks past overturned cars in Draguignan, France, on Wednesday, June 16, 2010. Regional authorities in southeastern France say at least a dozen people have been killed and many are missing in the aftermath of flash floods that followed powerful rainstorms. Unusually heavy rains recently in the Var region have transformed streets into muddy rivers that swept up trees, cars and other objects. (AP Photo/Lionel Cironneau)

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The River Artuby floods Draguignan, France, on Wednesday, June 16, 2010. Regional authorities in southeastern France say at least a dozen people have been killed and many are missing in the aftermath of flash floods that followed powerful rainstorms. Unusually heavy rains recently in the Var region have transformed streets into muddy rivers that swept up trees, cars and other objects. (AP Photo/Lionel Cironneau)

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Residents try to save a sports car from flooding near Draguignan, France, on Wednesday, June 16, 2010. Regional authorities in southeastern France say more than a dozen people have been killed and many are missing in the aftermath of flash floods that followed powerful rainstorms. Unusually heavy rains recently in the Var region have transformed streets into muddy rivers that swept up trees, cars and other objects. (AP Photo/Lionel Cironneau)

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A fireman helps an elderly woman on a flooded road in Draguignan, France, on Wednesday, June 16, 2010. Regional authorities in southeastern France say more than a dozen people have been killed and many are missing in the aftermath of flash floods that followed powerful rainstorms. Unusually heavy rains recently in the Var region have transformed streets into muddy rivers that swept up trees, cars and other objects. (AP Photo/Lionel Cironneau)

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Regional authorities in southeastern France say more than a dozen people have been killed and many are missing in the aftermath of flash floods that followed powerful rainstorms. Unusually heavy rains recently in the Var region have transformed streets into muddy rivers that swept up trees, cars and other objects. This flooded street is in Draguignan, France. (AP Photo/Claude Paris)

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A man takes pictures of piled-up cars in Draguignan, France, on Wednesday, June 16, 2010. Regional authorities in southeastern France say more than a dozen people have been killed and many are missing in the aftermath of flash floods that followed powerful rainstorms. Unusually heavy rains recently in the Var region have transformed streets into muddy rivers that swept up trees, cars and other objects. (AP Photo/Lionel Cironneau)

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Residents walk past a pile of cars in Trans en Provence, France, on Wednesday, June 16, 2010, after floods. Regional authorities in southeastern France say more than a dozen people have been killed and many are missing in the aftermath of flash floods that followed powerful rainstorms. Unusually heavy rains recently in the Var region have transformed streets into muddy rivers that swept up trees, cars and other objects. (AP Photo/Claude Paris)

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Residents walk past an overturned car on a street in Draguignan, France, on Wednesday, June 16, 2010. Regional authorities in southeastern France say more than a dozen people have been killed and many are missing in the aftermath of flash floods that followed powerful rainstorms. Unusually heavy rains recently in the Var region have transformed streets into muddy rivers that swept up trees, cars and other objects. (AP Photo/Lionel Cironneau)

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A goose walks through a street of Draguignan, France, on Wednesday, June 16, 2010. Regional authorities in southeastern France say more than a dozen people have been killed and many are missing in the aftermath of flash floods that followed powerful rainstorms. Unusually heavy rains recently in the Var region have transformed streets into muddy rivers that swept up trees, cars and other objects. (AP Photo/Lionel Cironneau)

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Residents salvage belongings along a street in Draguignan, France, on Wednesday, June 16, 2010. Regional authorities in southeastern France say at least a dozen people have been killed and many are missing in the aftermath of flash floods that followed powerful rainstorms. Unusually heavy rains recently in the Var region have transformed streets into muddy rivers that swept up trees, cars and other objects. (AP Photo/Lionel Cironneau)

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A woman photographs a camp site in Le Muy, France, on Wednesday, June 16, 2010, after floods. Regional authorities in southeastern France say more than a dozen people have been killed and many are still missing in the aftermath of flash floods that followed powerful rainstorms. Unusually heavy rains recently in the Var region have transformed streets into muddy rivers that swept up trees, cars and other objects. (AP Photo/Lionel Cironneau)