Environment

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This image provided by the United Space Alliance shows the launch of a weather satellite, the Atlas V rocket carrying the Defense Meteorological Satellite Program-19 spacecraft Thursday April 3, 2014, from Vandenberg Air Force Base, Calif. The U.S. military weather satellite is headed for for a polar orbit. (AP Photo/ United Space Alliance, Bill Hartenstein)

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Calvin West, with Meyer Dairy Farm, watches as spent grain bound for the farm fills the trailer at Empyrean Brewing on Tuesday, April 1, 2014, in Lincoln. Breweries in Nebraska say a federal proposal would force them to stop giving spent grains to local farmers to use as cattle feed. Brewers and farmers say the practice is mutually beneficial. It gives farmers cheap and nutritious cattle feed and the breweries no longer have to pay to have the spent grains hauled to a landfill. (AP Photo/The Journal-Star, Gwyneth Roberts) LOCAL TV OUT; KOLN-TV OUT; KGIN-TV OUT; KLKN-TV OUT

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A burnt out home and several tree limbs is spread on a lot, Tuesday March 25, 2014, on Crane near Charlevoix in Detroit's east side. A mass tree-planting effort is planned for May as part of a large-scale project. The May 17 event is planned by John Hantz where volunteers will help plant 15,000 young maple and oak trees on 50 acres of land where crews have been clearing blighted properties for the project. For the planting day, crews expect to have 15,000 pre-drilled holes ready. (AP Photo/Detroit News, Steve Perez) DETROIT FREE PRESS OUT; HUFFINGTON POST OUT

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Carl Davis an employee with Hantz Farms clears the street near a lot, Tuesday March 25, 2014, on Goethe near Crane in Detroit's east side. A mass tree-planting effort is planned for May as part of a large-scale project. The May 17 event is planned by John Hantz where volunteers will help plant 15,000 young maple and oak trees on 50 acres of land where crews have been clearing blighted properties for the project. For the planting day, crews expect to have 15,000 pre-drilled holes ready. (AP Photo/Detroit News, Steve Perez) DETROIT FREE PRESS OUT; HUFFINGTON POST OUT

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Andy Williams an employee with Hantz Farms clears a lot, Tuesday March 25, 2014, on Crane near Goethe in Detroit's east side. A mass tree-planting effort is planned for May as part of a large-scale project. The May 17 event is planned by John Hantz where volunteers will help plant 15,000 young maple and oak trees on 50 acres of land where crews have been clearing blighted properties for the project. For the planting day, crews expect to have 15,000 pre-drilled holes ready. (AP Photo/Detroit News, Steve Perez) DETROIT FREE PRESS OUT; HUFFINGTON POST OUT

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This photo provided by NASA shows water vapor jets, emitted from the southern polar region of Saturn's moon Enceladus. Scientists have uncovered a vast ocean beneath the icy surface of the moon, they announced Thursday, April 3, 2014. Italian and American researchers made the discovery using Cassini, a NASA-European spacecraft still exploring Saturn and its rings 17 years after its launch from Cape Canaveral. (AP Photo/NASA, JPL, Caltec, Space Science Institute)

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This illustration provided by NASA and based on Cassini spacecraft measurements shows the possible interior of Saturn's moon Enceladus - an icy outer shell and a low density, rocky core with a regional water ocean sandwiched in between the two at southern latitudes. Plumes of water vapor and ice, first detected in 2005, are depicted in the south polar region. Scientists have uncovered a vast ocean beneath the icy surface of the moon, they announced Thursday, April 3, 2014. Italian and American researchers made the discovery using Cassini, a NASA-European spacecraft still exploring Saturn and its rings 17 years after its launch from Cape Canaveral. (AP Photo/NASA, JPL, Caltech)

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This undated photo provided by NASA on April 2, 2014 shows Saturn's moon Enceladus. The "tiger stripes" are long fractures from which water vapor jets are emitted. Scientists have uncovered a vast ocean beneath the icy surface of the moon, they announced Thursday, April 3, 2014. Italian and American researchers made the discovery using Cassini, a NASA-European spacecraft still exploring Saturn and its rings 17 years after its launch from Cape Canaveral. (AP Photo/NASA, JPL, Space Science Institute)

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Almost all of the Cherry Blossoms along the Tidal Basin look like this tree, just about to bloom on a warm spring day, Washington, D.C., Thursday, April 3, 2014. (Andrew Harnik/The Washington Times)

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Almost all of the Cherry Blossoms along the Tidal Basin look like this tree, just about to bloom on a warm spring day, Washington, D.C., Thursday, April 3, 2014. (Andrew Harnik/The Washington Times)

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Capt. Jeff Zonrnes, of the Monroe Fire Department, looks on in the debris field, Wednesday, April 2, 2014, as volunteers worked to clear more of the mudslide area in Oso, Wash. A deadly mudslide in March killed more than two dozen people. (AP Photo/The Herald, Genna Martin)

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Workers look on as an excavator moves trees and dirt in the debris field, Wednesday, April 2, 2014, where volunteers continued to search through the mudslide area in Oso, Wash. (AP Photo/The Herald, Genna Martin)

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Members of the Washington State National Guard search through debris field for personal items and bodies, Wednesday, April 2, 2014, where workers continued to search through the mudslide area in Oso, Wash. (AP Photo/The Herald, Genna Martin)