Skeptical on climate change? This summer changed a lot of minds

As the U.S. sizzled, many people's thoughts turned to global warming.

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Even the moving rocks of Racetrack Playa in Death Valley, Calif. can’t escape the heat. Photo: Jeffery Aiello/NPS.

For many years, it seemed that those in the U.S. who believed that climate change was a growing iss…