Environment

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A stretch of the Elk River in Charleston, W.Va., is shown Friday, Jan. 10, 2014. The White House has issued a federal disaster declaration in West Virginia, where a chemical spill in the Elk River that may have contaminated tap water has led officials to tell at least 300,000 people not to bathe, brush their teeth or wash their clothes. The West Virginia National Guard planned to distribute bottled drinking water to emergency services agencies in the nine affected counties. About 100,000 water customers, or 300,000 people total, were affected, state officials said. (AP Photo/Tyler Evert)

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In this June 8, 2013 photo, a central Illinois farmer continues planting corn seed into the evening in Farmingdale, Ill. Falling corn prices and questions about ethanol demand could lead Illinois farmers to plant fewer acres of corn in 2014 and instead are taking a closer look at soybeans this year. (AP Photo/Seth Perlman)

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In this May 25, 2013, photo, recently planted corn grows is seen on a central Illinois farm field near Chandlerville, Ill. Falling corn prices and questions about ethanol demand could lead Illinois farmers to plant fewer acres of corn this year and instead are taking a closer look at soybeans this year. (AP Photo/Seth Perlman)

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In this June 29, 2013 photo, storm clouds form over grain bins on a soybean field near Pleasant Plains, Ill. Falling corn prices and questions about ethanol demand could lead Illinois farmers to plant fewer acres of corn this year and instead are taking a closer look at soybeans this year. (AP Photo/Seth Perlman)

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West Virginia State Troopers fill water jugs at the Kmart in Elkview, W.Va., Friday, Jan. 10, 2014. Emergency crews are setting up water depots at many locations around the state following a chemical spill Thursday on the Elk River that compromised the public water supply to nine counties. (AP Photo/Tyler Evert)

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ADVANCE FOR SUNDAY JAN. 12 - In this Dec. 23, 2013 photo, wildlife rehabilitator Lou Browning examines the eyes of a female Barred Owl at his Hatteras Island Wildlife Rehabilitation facility in Frisco, N.C. The bird was hit by a car and Browning determined it was blinded in one eye. Browning is federally licensed and volunteers his time to operate the nonprofit Hatteras Island Wildlife Rehabilitation Inc. (AP Photo/The Virginian-Pilot, Stephen M. Katz) MAGS OUT

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ADVANCE FOR SUNDAY JAN. 12 - In this Dec. 23, 2013 photo, wildlife rehabilitator Lou Browning feeds a Peregrine Falcon at his Hatteras Island Wildlife Rehabilitation facility in Frisco, N.C. The bird was hit by a car and Browning determined it was blinded in one eye. Browning is federally licensed and volunteers his time to operate the nonprofit Hatteras Island Wildlife Rehabilitation Inc. (AP Photo/The Virginian-Pilot, Stephen M. Katz) MAGS OUT

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ADVANCE FOR SUNDAY JAN. 12 - In this Dec. 23, 2013 photo,wildlife rehabilitator Lou Browning removes a female Barred Owl from its cage to examine the bird's eye at Browning's Hatteras Island Wildlife Rehabilitation facility in Frisco, N.C. The bird was hit by a car and Browning determined it was blinded in one eye. Browning is federally licensed and volunteers his time to operate the nonprofit Hatteras Island Wildlife Rehabilitation Inc. (AP Photo/The Virginian-Pilot, Stephen M. Katz) MAGS OUT