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Elon Musk, CEO of US automotive and energy storage company Tesla, presents his outlook on climate change at the Paris-Sorbonne University in Paris on December 2, 2015. / AFP / ERIC PIERMONT        (Photo credit should read ERIC PIERMONT/AFP/Getty Images)

“[O]nly a carbon tax—not innovation, conservation, or renewable energy—will accelerate the transition from carbon-producing fossil fuels to sustainable energy.”

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