Environment

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Chinese rescue workers carry wooden boards to create a passable route through soft mud after a mudslide swept into the town of Zhouqu in Gannan prefecture of northwestern China's Gansu province, Tuesday, Aug. 10, 2010. (AP Photo/Ng Han Guan)

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Rescue workers and residents search for victims after a mud slide swept into the town of Zhouqu in Gannan prefecture of northwestern China's Gansu province, Tuesday, Aug. 10, 2010. (AP Photo/Ng Han Guan)

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ASSOCIATED PRESS House speaker Nancy Pelosi answers questions during her visit to Portland, Ore. Thursday, Aug. 5, 2010.. The California Democrat toured the home of Heather and Pete Ficht - one of 500 homes in a pilot program called Clean Energy Works Portland that aims to improve energy efficiency.

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Destroyed railroad tracks near Hegenwerder, Germany, show the extent of damage left as swollen rivers pushed northward. (Associated Press)

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A resident of Bogatynia, Poland, uses a rope to get across a fast-flowing but receding river Monday after a bridge collapsed in flash floods that killed at least 11 people and left towns in Poland, the Czech Republic and Germany strewn with rubble and coping with badly damaged homes and roads. (Associated Press)

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** FILE ** Haitian-born singer Wyclef Jean greets supporters after he submitted paperwork to run for president of Haiti in early August. Mr. Jean, who left Haiti as a child, said he would like to focus on Haiti's economy, which would include creating jobs in the garment-export industry. (AP Photo)

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Students walk by burning debris set afire in protest of the Haitian government's lack of help to rebuild the area after the earthquake in Port-au-Prince. Education is one of the areas Haitian candidate for president Wyclef Jean hopes to improve. (Associated Press)

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Aerial view shows the castle in Bad Muskau, Germany, partly flooded by the Neisse river on Monday Aug. 9, 2010. The park of the castle is a UNESCO World Heritage Site. Poles, Czechs and Germans struggled Monday to clean up homes and towns badly damaged as the waters of deadly weekend flooding began to recede. But the swollen rivers pushed northward, and other towns and villages braced for possible high waters. The floods have killed more than 10 people. (AP Photo/ddp/ Klaus-Dietmar Gabbert)

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Residents stand in a destroyed street after flash floods in the town of Bogatynia, Poland, Monday , Aug. 9, 2010. The flooding has struck an area near the borders with Germany and the Czech Republic, where there have also been several fatalities. (AP Photo/Robert Steiner )

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A resident walks on a destroyed street after flash floods in the town of Bogatynia, Poland, Monday , Aug. 9, 2010. The flooding has struck an area near the borders with Germany and the Czech Republic, where there have also been several fatalities. (AP Photo/Robert Steiner )

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Resident tosses a bottle with water across the river after a bridge collapsed during flash floods in the town of Bogatynia, Poland, Monday, Aug. 9, 2010. Poles, Czechs and Germans struggled Monday to clean up homes and towns badly damaged as the waters of deadly weekend flooding began to recede. But the swollen rivers pushed northward, and other towns and villages braced for possible high waters. The floods have killed more than 10 people. (AP Photo / Petr David Josek)

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A resident stands next to her destroyed house that collapsed in flash floods that hit the town of Bogatynia, Poland, Monday, Aug. 9, 2010. Poles, Czechs and Germans struggled Monday to clean up homes and towns badly damaged as the waters of deadly weekend flooding began to recede. But the swollen rivers pushed northward, and other towns and villages braced for possible high waters. The floods caused a number of fatalities. (AP Photo/Petr David Josek)

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A woman takes a picture of house that collapsed in flash floods that hit the town of Bogatynia, Poland, Monday, Aug. 9, 2010. Poles, Czechs and Germans struggled Monday to clean up homes and towns badly damaged as the waters of deadly weekend flooding began to recede. But the swollen rivers pushed northward, and other towns and villages braced for possible high waters. The floods caused a number of fatalities. (AP Photo/Petr David Josek)

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Pakistani villagers chase to relief supplies dropped from an army helicopter in a heavy flood-hit area of Mithan Kot, in central Pakistan, Monday, Aug. 9, 2010. The government has struggled to cope with the scale of the disaster, which has killed at least 1,500 people, prompting the international community to help by donating tens of millions of dollars and providing relief supplies. (AP Photo/Khalid Tanveer)

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Pakistani villagers swim across floodwaters after collecting relief supplies dropped from an army helicopter in a heavy flood-hit area of Mithan Kot, in central Pakistan, Monday, Aug. 9, 2010. The government has struggled to cope with the scale of the disaster, which has killed at least 1,500 people, prompting the international community to help by donating tens of millions of dollars and providing relief supplies. (AP Photo/Khalid Tanveer)

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Crew members help villagers get off an army helicopter after being transported from a heavily flooded area to Sukkur in Pakistan's Sindh province on Monday, Aug. 9, 2010. (AP Photo/Pervez Masih)

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Flood-affected children queue for relief distributed by the Falah-e-Insaniyat foundation, the charity wing of the Pakistani militant group Jamaat-ud-Dawa, in Nowshera, Pakistan, on Monday, Aug. 9, 2010. The number of people suffering from the massive floods in Pakistan exceeds 13 million -- more than the combined total of the 2004 Indian Ocean tsunami, the 2005 Kashmir earthquake and the 2010 Haiti earthquake, the United Nations said. (AP Photo/B.K. Bangash)

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Volunteers of the Falah-e-Insaniyat foundation, the charity wing of the Pakistani militant group Jamaat-ud-Dawa, supervise the cooking of food for flood-affected people in Nowshera in northwest Pakistan on Monday, Aug. 9, 2010. The number of people suffering from the massive floods in Pakistan exceeds 13 million -- more than the combined total of the 2004 Indian Ocean tsunami, the 2005 Kashmir earthquake and the 2010 Haiti earthquake, the United Nations said. (AP Photo/B.K. Bangash)

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A villager stands outside what is left of homes washed away by heavy floods in Charsadda in northwest Pakistan on Monday, Aug. 9, 2010. The number of people suffering from the massive floods in Pakistan exceeds 13 million -- more than the combined total of the 2004 Indian Ocean tsunami, the 2005 Kashmir earthquake and the 2010 Haiti earthquake, the United Nations said. (AP Photo/B.K. Bangash)

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Children scuffle for food relief in Nowshera in northwest Pakistan on Monday, Aug. 9, 2010, in the wake of massive flooding. The number of people suffering from the floods in Pakistan exceeds 13 million -- more than the combined total of the 2004 Indian Ocean tsunami, the 2005 Kashmir earthquake and the 2010 Haiti earthquake, the United Nations said. (AP Photo/B.K.Bangash)