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renewable energy
Wednesday
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A car drives by a Switch data center in Las Vegas on Sept. 9, 2015. In 2013, data centers consumed 2 percent of all U.S. power — triple what they used in 2000. John Locher/AP hide caption
Making The Cloud Green: Tech Firms Push For Renewable Energy Sources
Wyoming Public Radio
Making The Cloud Green: Tech Firms Push For Renewable Energy Sources
Tuesday
Logger Greg Hemmerich and his crew feed low-value trees into a wood chipper, before bringing the chips to ReEnergy Holdings' biomass plant in Lyonsdale, N.Y. David Sommerstein/NCPR hide caption
Is Burning Trees Still Green? Some Experts Now Question Biomass
Monday
On some sunny, spring days, California has more electricity than it can use, like from this solar farm in Fresno. Terry O'Rourke/NREL hide caption
Who's In Charge? Getting Western States To Agree On Sharing Renewable Energy
Thursday
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
Tuesday
At the Heartland Biogas Project, millions of tons of food waste are collected and converted into usable methane gas. Luke Runyon/KUNC, Harvest Public Media hide caption
Thursday
The Noor I Concentrated Solar Power plant, shown on Thursday, is the first phase of a large solar thermal power plant that is intended to supply more than a million Moroccans with electricity. Fadel Senna/AFP/Getty Images hide caption
Tuesday
"Solar trees," which suspend solar panels over parking spaces in San Diego, collect electricity. Generating solar power like this is just one rung on a ladder the city will have to climb to reach 100 percent renewable energy by 2035. Clare Trageser/KPBS hide caption
San Diego Mulls Whether To Let City, Not Utility, Buy Alternative Energy
Friday
The Heartland Biogas facility in Weld County, Colo., is one of the country's largest waste treatment plants that converts methane to natural gas. Rebecca Jacobson/Inside Energy hide caption
From Poop To Power: Colorado Explores New Sources Of Renewable Energy
Tuesday
Onlookers come to admire the self-proclaimed "Miracle on 34th Street" in the Baltimore neighborhood of Hampden. But not every country has as much electricity as America does. Patrick Semansky/AP hide caption
Friday
Wind turbines outside Caledon in Cape Town, South Africa. Solar and wind farms are filling in the gaps during power shortages. Nardus Engelbrecht/Gallo Images/Getty Images hide caption
Wednesday
A solar tower belonging to the Spanish firm Abengoa is shown near Seville, in southern Spain, on Nov. 13. The large renewable energy company, which has been heavily subsidized by the government, is in danger of becoming the country's largest bankruptcy. The company also has a large solar facility in Arizona that has received U.S. government loan guarantees. Marcelo Del Pozo/Reuters /Landov hide caption
Thursday
Kevin Murphy says he is proud of what he and the other workers do at the Rosebud mine, including digging the coal and reclaiming the land afterward. Amy Martin/Montana Public Radio hide caption
Thursday
United has purchased 15 million gallons of renewable jet fuel made from beef tallow, or fat, by Alt Air Fuels and plans to use the fuel this year for Los Angeles-to-San Francisco flights. Tony Ruppe/United hide caption