Gates: "To prevent the worst effects of climate change, we need to get to zero net greenhouse gas emissions in every sector of the economy within 50 years. " H

Gates: "To prevent the worst effects of climate change, we need to get to zero net greenhouse gas emissions in every sector of the economy within 50 years. " Hmmm ... If the best we can hope for is avoiding the worst, Bill, maybe we should consider setting our sights higher. Not all of us can live underground, like you'll be.