Those Bloom Energy fuel cells that eBay said it will use to power its new data center in Utah? They'll run on natural gas. Likewise most Bloom Boxes going in these days.
Fuel cell technology has been steadily making the transition from research and development to commercialization over the past year.
Milk, cream, proteins, syrups and pieces of fruit - all are are part of the waste stream of ice-cream factories, and soon, at a Ben and Jerry's factory in the Netherlands, they'll all help to produce green power.