Environment

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Belarus players celebrate their goal during the Group B preliminary round match between Belarus and Switzerland at the Ice Hockey World Championship in Minsk, Belarus, Monday, May 12, 2014. (AP Photo/Darko Bandic)

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Debris is cleared from downtown Sutton, Neb., Monday, May 12, 2014, after a tornado touched down in town on Sunday. Several tornadoes moved across Nebraska on Sunday causing damage to homes and businesses in or near Sutton, Garland, Cordova and Daykin. The storms also left more than 18,000 utility customers without electricity. (AP Photo/Nati Harnik)

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Smashed cars and belongings litter the surroundings of a house in Cordova, Neb., Monday, May 12, 2014, after several tornadoes moved across Nebraska on Sunday causing damage to homes and businesses in or near Sutton, Garland, Cordova and Daykin. The storms also left more than 18,000 utility customers without electricity. (AP Photo/Nati Harnik)

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FILE - In this Aug. 19, 2011 file photo, North Dakota Agriculture Commissioner Doug Goehring listens during a meeting of farm interest groups at the state Capitol in Bismarck. The state Agriculture Department has scheduled this year's round of Project Safe Send chemical collections around North Dakota. The program gives farmers, ranchers, pesticide dealers and applicators, government agencies and homeowners a way to dispose of unusable herbicides, insecticides, rodenticides and fungicides free of charge. (AP Photo/Dale Wetzel, File)

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Injured Finland forward Pekka Jormakka is taken away from the ice during the Group B preliminary round match between Russia and Finland at the Ice Hockey World Championship in Minsk, Belarus, Sunday, May 11, 2014. (AP Photo/Darko Bandic)

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Injured Finland forward Pekka Jormakka is taken away from the ice during the Group B preliminary round match between Russia and Finland at the Ice Hockey World Championship in Minsk, Belarus, Sunday, May 11, 2014. (AP Photo/Darko Bandic)

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Vicki Dixon, an Interior Department employee, right, helps her colleague Steven Avila, with his Washington Monument costume at the Washington Monument in Washington, Monday, May 12, 2014, ahead of a ceremony to celebrate its re-opening. The monument, which sustained damage from an earthquake in August 2011, is reopening to the public today. Avila made the costume to show his support for the re-opening of the monument. (AP Photo)