The shine might have come off renewable energy in the last year, but new innovations about generating fuel from the craziest sources mean we have a lot of hope for more and more clean power in the future.
While still in the experimental stage, a new kind of battery can run off of discarded paper, producing electricity with only a little water as a by-product. Forget recycling, soon you'll power your home with yesterday's news.
In this extended version of the talk from our new issue, we speak with Marianne Wu, a partner at Mohr Davidow Ventures. "A lot of people assume that green biofuels mean higher prices or worse performance," Wu says. "That's changing."