President Obama met with China's president, Xi Jinping, at an event linked to the international climate conference held late last year outside Paris. Evan Vucci/AP hide caption

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Can The U.S. And China Keep Their Climate Pledges?
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Workers install solar panels on the roof of a home in Camarillo, Calif., in 2013. San Francisco has recently decided to start requiring rooftop solar systems — electrical or heating — on new construction up to 10 stories tall. Anne Cusack/LA Times via Getty Images hide caption

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About 14 percent of the Gigafactory in Nevada has been built so far. At 5.8 million square feet, it will be a building with one of the biggest footprints in the world. Tesla hide caption

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A Rare Look Inside The 'Gigafactory' Tesla Hopes Will Revolutionize Energy Use
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What Peabody's Bankruptcy Means To St. Louis
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In 2006, a bulldozer sits ready for work at Peabody Energy's Gateway Coal Mine near Coulterville, Ill. Peabody is the latest coal company to declare bankruptcy. Seth Perlman/AP hide caption

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March 25: Bankruptcies Fuel Uncertainty In Coal Communities
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The Vermont Yankee nuclear power plant sits along the banks of the Connecticut River in Vernon, Vt. It began operations in 1972 and was shut down at the end of 2014, the victim of competition from plants powered by abundant and cheap natural gas. Toby Talbot/AP hide caption

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Unable To Compete On Price, Nuclear Power On The Decline In The U.S.
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Former Energy CEO Don Blankenship Sentenced To 1 Year In Prison
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Oil rigs extract petroleum in Culver City, Calif., on May 16, 2008. Gabriel Bouys/AFP/Getty Images hide caption

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Before Hollywood, The Oil Industry Made LA
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SolarReserve's Crescent Dunes Solar Energy Plant, located near Tonopah, Nev., features an array of 10,347 mirrors arranged in a circle 1.75 miles across. A 640-foot-tall tower glows when the sun's energy is concentrated and directed to the top. SolarReserve hide caption

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Solar And Wind Energy May Be Nice, But How Can We Store It?
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As Renewables Boom, Companies Explore Energy Storage Technology
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Tesla Motors unveils the new lower-priced Model 3 sedan in Hawthorne, Calif., on Thursday. Justin Prichard/AP hide caption

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A Tesla For The Masses? Orders For Model 3 Top 100K In First Hours
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Tundra Issue: How To Keep Oil Workers From Crossing Paths With Bears
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An oil field truck is used to make a transfer at oil-storage tanks in Williston, N.D., in 2014. It was atop tanks like these that oil worker Dustin Bergsing, 21, was found dead. Eric Gay/AP hide caption

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Mysterious Death Reveals Risk In Federal Oil Field Rules
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Large cracks in the sidewalk in Coyle, Okla., appeared after several earthquakes on Jan. 24. J Pat Carter/Getty Images hide caption

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U.S. Geology Maps Reveal Areas Vulnerable To Man-Made Quakes
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