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The Battle Over Oil And Gas Development In Colorado

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Los Angeles Tests Whether Lighter Color Streets Will Lower The Temperature

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Greenpeace activists hang a banner from the rafters at a bank shareholders' meeting earlier this year in Zurich, calling for it to "STOP DIRTY PIPELINE DEALS!" Also on the banner are hashtags supporting Dakota Access Pipeline protesters. Michael Buholzer/AFP/Getty Images hide caption

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Michael Buholzer/AFP/Getty Images

Kelp plants grow on a 30-foot-long, white PVC pole suspended in the water. If this is successful, instead of just one row, there would be a whole platform, hundreds of meters across and hundreds of meters deep, full of kelp plants. Courtesy of David Ginsburg/Wrigley Institute hide caption

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Courtesy of David Ginsburg/Wrigley Institute

Scientists Hope To Farm The Biofuel Of The Future In The Pacific Ocean

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California's Forests Continue To Die After Years Of Drought

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In Alaska, One Man Fights To Save Oil Fund As Reserves Dry Up

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Much of Albert Einstein's best-known work, including his famous formula, was conducted in Europe, but when the Nazis came to power, he and other famous scientists brought their talent to the U.S. Selimaksan/Getty Images/iStockphoto hide caption

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Selimaksan/Getty Images/iStockphoto

About 50 percent of patients don't take their medicine as prescribed, research shows. And those mistakes are thought to result in at least 100,000 preventable deaths each year. amphotora/Getty Images hide caption

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amphotora/Getty Images

'Smart' Pill Bottles Aren't Always Enough To Help The Medicine Go Down

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Hospital emergency departments are tasked with saving the lives of people who overdose on opioids. Clinicians and researchers hope that more can be done during the hospital encounter to connect people with treatment. FangXiaNuo/Getty Images hide caption

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FangXiaNuo/Getty Images

Brothers Chris and Gabe Fabiano watch the solar eclipse on Hilton Head Island, S.C. Win McNamee/Getty Images hide caption

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Win McNamee/Getty Images

Amanda Bentley Brymer Watches The Eclipse In Tennessee

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Darkness Falls Across The Land As Total Solar Eclipse Passes Over U.S.

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Americans View Astronomical Show As Total Solar Eclipse Sweeps Across U.S.

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Total Solar Eclipse Travels From Oregon To South Carolina

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People Travel Across The Country To Get A Glimpse Of The Solar Eclipse

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States Work To Help Marijuana Industry Reduce Power Costs

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Anhydrous ammonia tanks in a newly planted wheat field. Walmart has promised big cuts in emissions of greenhouse gases. To meet that goal, though, the giant retailer may have to persuade farmers to use less fertilizer. It won't be easy. TheBusman/Getty Images hide caption

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Can Anyone, Even Walmart, Stem The Heat-Trapping Flood Of Nitrogen On Farms?

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A total solar eclipse is seen over Madras, Ore., Monday as the phenomenon begins its journey across the United States to South Carolina. Fourteen states were in the path of totality. NASA/Aubrey Gemignani/NASA via Getty Images hide caption

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NASA/Aubrey Gemignani/NASA via Getty Images