Environment

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Workers from the Puerto Rico Health Department and CDC review Zika-related data collected by the island's health dept and the U.S. Centers for Disease Control and Prevention (CDC) in San Juan, Puerto Rico, on Feb. 24, 2016. (Associated Press) ** FILE **

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(Photo: Magnolia Pictures)

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Republican presidential candidate, Sen. Marco Rubio, R-Fla., looks on during a Republican presidential primary debate at The University of Houston, Thursday, Feb. 25, 2016, in Houston. (AP Photo/David J. Phillip)

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Barry Goldwater

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Woody Island, South China Sea. (Map Data: Google, DigitalGlobe)

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The most egregious examples of government waste, fraud or abuse from TWT staff. (Golden Hammer cropped logo)

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U.S. and Russian troops meet on the wrecked bridge over the Elbe River at Torgau, Germany, April 26, 1945. The Americans, left, and Russian soldiers are shown as they reach out to grasp each other's hands. (AP Photo)

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A male sage grouse struts in the early morning hours April 22, 2015 on a lek outside Baggs, Wyoming. Environmental groups sued Thursday, Feb. 25, 2016, to force the Obama administration to impose more restrictions on oil and gas drilling, grazing and other activities blamed for the decline of greater sage grouse across the American West. (Dan Cepeda/The Casper Star-Tribune via AP)

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In this Wednesday, July 15, 2015 photo, Luke Ellison, research supervisor at the University of California Davis Fish Conservation and Culture Lab, displays a Delta smelt that he has just placed an orange identification tag on for future study at the lab in Byron,Calif. The tiny, endangered fish, found in the Sacramento-San Joaquin River Delta, is at the center of the state's water battle between farmers while biologists. (AP Photo/Rich Pedroncelli)

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Wreckage of the Sugar Hill RV Park is scattered in Convent, La., Wednesday, Feb. 24, 2016. Tornadoes and severe weather ripped through the Gulf Coast on Tuesday, mangling trailers at an RV park, ripping off roofs from buildings in Louisiana and Mississippi, authorities said. (AP Photo/Max Becherer)

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Damage from a tornado is seen Tuesday near Convent, La. (The Advocate via Associated Press)

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Debris lies on the ground after part of the roof of a home was destroyed during a storm in Livingston Parish, La., Tuesday, Feb. 23, 2016. Severe weather spawned possible twisters and high winds in parts of the Deep South, authorities said. (Hilary Scheinuk/The Advocate via AP)