In a speech at TED 2010, Microsoft founder Bill Gates says the world's economic future hangs in the energy balance -- and a changing climate could induce planetary catastrophe.
Gates says the goal should be zero -- yes, zero -- global carbon emissions by 2050.
Here's his argument, and his explanation for why he's backing a new type of nuclear reactor:
Follow Bill Gates on Twitter.
This post was originally published on Smartplanet.com