Towers carry electrical lines in San Francisco. The electricity grid is a web of power stations, transformers and transmission lines that span the continent. Justin Sullivan/Getty Images hide caption

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Power Grid Must Adapt To Handle Renewable Energy
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A liquefied natural gas tanker arrives at a gas storage station east of Tokyo on April 6, 2009. The shuttering of Japan's nuclear power plants has driven an increased reliance on natural gas and other fossil fuels. AFP/Getty Images hide caption

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Nuclear Woes Push Japan Into A New Energy Future
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Climate Scientist Admits To Lying, Leaking Documents
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Nature Has A Good Beat, But Can You Dance To It?
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Steam rises from the cooling towers of nuclear reactors at Georgia Power's Plant Vogtle in Waynesboro, Ga. The U.S. Nuclear Regulatory Commission approved Southern Co.'s application to begin full construction of the nation's first new nuclear units since 1978 at Plant Vogtle. Mary Ann Chastain/AP hide caption

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Nuclear Safety, Cost Issues Loom As U.S. OKs Reactor
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Pythons Blamed For Everglade's Disappearing Animals
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Nonnative pythons, like this one, are invading the Florida Everglades. As a top predator, the snakes have crippled the populations of rabbits, raccoons and other animals. Joe Raedle/Getty Images hide caption

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Invasive Pythons Put Squeeze On Everglades' Animals
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Without a centralized national repository for nuclear waste, the radioactive material is currently being kept at various sites across the country. Above, large concrete canisters, each holding 14 55-gallon drums of waste, are loaded on a truck in 2005 in Richland, Wash., where they were later shipped to a facility in New Mexico. Jeff T. Green/Getty Images hide caption

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How To Find A New Nuclear Waste Site? Woo A Town
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Hydraulic fracturing wells have been producing a tremendous amount of natural gas — far more than the current demand. Above, a Cabot Oil & Gas natural gas drill at a fracking site in South Montrose, Pa. Spencer Platt/Getty Images hide caption

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Is The Booming Natural Gas Industry Overproducing?
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Contractors with SunEdison install more than 1,000 Chinese-made solar panels on top of a Kohl's Department Store in Hamilton Township, N.J., in 2010. Energy generated by the solar system will cut the store's usage, on average, by 25 to 30 percent. Robert Nickelsberg/Getty Images hide caption

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Cheap Chinese Panels Spark Solar Power Trade War
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An Indian street dweller prepares food on the streets of Kolkata. A growing number of scientists say that reducing black carbon — mostly soot from burning wood, charcoal and dung — would have an immediate and powerful impact on climate. Deshakalyan Chowdhury/AFP/Getty Images hide caption

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To Slow Climate Change, Cut Down On Soot, Ozone
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With the skyline of Youngstown, Ohio, in the distance, a brine injection well owned by Northstar Disposal Services LLC is seen in Youngstown on Jan. 4. The company has halted operations at the well, which disposes of brine used in gas and oil drilling, after a series of small earthquakes hit the Youngstown area. Amy Sancetta/AP hide caption

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How Fracking Wastewater Is Tied To Quakes
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In a double-blind test by professional violinists, most couldn't determine — by sound alone — which violin was an original Stradivarius and which was a modern instrument. Above, a 1729 Stradivari known as the "Solomon, Ex-Lambert." Don Emmert/AFP/Getty Images hide caption

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Double-Blind Violin Test: Can You Pick The Strad?
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A Kemp's ridley sea turtle like this one traveled 4,600 miles across the Atlantic ocean in 2008. After being rehabilitated in Portugal, it is being reintroduced into its native Gulf of Mexico waters on Tuesday. US EPA via flickr hide caption

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Endangered Turtle Survives Trans-Atlantic Journey
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The crippled Fukushima Dai-ichi nuclear power station is seen through a bus window on Nov. 12. The four reactors that failed were stabilized this month. David Guttenfelder/AFP/Getty Images hide caption

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After Fukushima: A Changing Climate For Nuclear
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