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By one estimate, emissions from producing and incinerating plastics could amount to 56 gigatons of carbon — almost 50 times the annual emissions of all of the coal power plants in the U.S. — between now and 2050. Koji Sasahara/AP hide caption

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Koji Sasahara/AP

Plastic Has A Big Carbon Footprint — But That Isn't The Whole Story

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Some cottonwood trees are home to microorganisms that are known methane producers. Sean Bagshaw/Science Source/Getty Images hide caption

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Sean Bagshaw/Science Source/Getty Images

Getting Fire From A Tree Without Burning The Wood

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Dr. Brian Chesebro (right), in Portland, Ore., has calculated that by simply using the anesthesia gas sevoflurane in most surgeries, instead of the similar gas desflurane, he can significantly cut the amount of global warming each procedure contributes to the environment. Kristian Foden-Vencil/OPB hide caption

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Kristian Foden-Vencil/OPB

Effects Of Surgery On A Warming Planet: Can Anesthesia Go Green?

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California predicts mandatory solar panel installations will add nearly $10,000 to the upfront cost of a home — money that will be recouped through energy savings. Rich Pedroncelli/AP hide caption

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Rich Pedroncelli/AP

Thick clouds emanate from a coal-burning power plant in Baishan, in the Jilin province of China. In an effort to boost its economy, China has recently started greenlighting coal projects that had been on hold. Christian Petersen-Clausen/Getty Images hide caption

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Christian Petersen-Clausen/Getty Images

Carbon Dioxide Emissions Are Up Again. What Now, Climate?

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Researchers at the University of California, Davis are testing whether adding seaweed to cows' feed reduces methane emissions. Merrit Kennedy/NPR hide caption

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Merrit Kennedy/NPR

Surf And Turf: To Reduce Gas Emissions From Cows, Scientists Look To The Ocean

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Luminalt solar installers Pam Quan (right) and Walter Morales (left) install solar panels on a roof in San Francisco on Wednesday. The California Energy Commission approved a regulation that would require all new homes in the state to have solar panels. Justin Sullivan/Getty Images hide caption

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Justin Sullivan/Getty Images

Gas is pumped into vehicles at a BP gas station in Hoboken, N.J. in 2016.The Obama administration moved to nearly double fuel-economy standards by 2025, but the EPA now is moving to weaken them. Julio Cortez/AP hide caption

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Julio Cortez/AP

A natural gas drilling rig's lights shimmer in the evening light near Silt, Colo. Methane is the main component of natural gas, and studies show some methane escapes from leaky oil and gas operations. David Gilkey/NPR hide caption

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David Gilkey/NPR

Methane's On The Rise, But Regulations To Stop Gas Leaks Still Debated

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A wind farm in Montezuma Hills, about 40 miles northeast of San Francisco. California is considering proposals to, among other things, derive half the state's electricity from renewable sources. Carl Costas/CALmatters hide caption

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Carl Costas/CALmatters

California Considers Sweeping Proposals To Cut Greenhouse Gas Emissions

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