Over at Worldchanging, Alex Steffen calls Bill Gates’ talk about climate change the most important speech ever given at TED. Gates said that the number one priority for him and the Gates Foundation (the world’s largest philanthropic organization) is to combat human-driven climate change.
He reckons that because population is going to continue to grow for at least four decades, because billions of poor people want more equitable prosperity, and because (as he sees it) improvements in energy efficiency are limited, we have to focus on the last element of the equation, the carbon intensity of energy. Simply, we need climate-neutral energy. We need to use nothing but climate-neutral energy.