As President Obama noted, there has never been a more important time to take a cold, hard look at the realities of existing clean energy technologies and the global climate challenge. Unfortunately, clean energy policy is at a crossroads. Thanks to public investments during the last five years by the United States, Europe, and China, among others, zero-carbon technologies like solar, wind, and electric vehicles have improved significantly and become cheaper, but still not as cheap as fossil fuels.
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June 12, 2014