A worker solders solar cell modules at a Star 8 Solar Green Commercial Pty factory in Phnom Penh, Cambodia, on Tuesday, March 8, 2016. Global output from photovoltaics, panels that convert light directly into electricity, has increased 40 percent every year for the past decade. The industry is drawing roughly $150 billion in annual investment, accounting for almost half the funds committed to renewable energy. Photographer: Taylor Weidman/Bloomberg via Getty Images
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