“Virgin Earth Challenge”—a $25 million prize that would go to the first inventor to figure out how to sequester one billion tons of carbon a year from the air “without countervailing harmful effects.” He described it as “the largest ever science and technology prize to be offered in history.” This, Branson pronounced, was “the best way to find a solution to the problem of climate change,” elaborating in an official statement that, “If the greatest minds in the world today compete, as I’m sure they will, for The Virgin Earth Challenge, I believe that a solution to the CO2 problem could
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