With the $3 billion pledge, he would try to invent a low carbon fuel that could keep his airlines running at full capacity. If that failed, and carbon still needed to be burned to keep the planes in the air, then the prize would surely help invent a way to suck the heat-trapping gas out of the sky before it’s too late. To cover one more base, in 2009 Branson launched the Carbon War Room, an industry group looking for ways that different sectors could lower their emissions voluntarily, and save money in the process. “Carbon is the enemy,” Branson declared. “Let’s attack it in any possible way
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