Fuel Up With Banana Peels

by Cyrus Farivar Wired News, 2 Dec 2005 Mad scientist Doc Brown powers his time machine by feeding coffee grounds and other biowaste into the DeLorean in "Back to the Future." While time travel is still in the realm of science fiction, carbon-based fuel cells are about to become science fact -- rendering a similar scenario all the more possible. SRI announced in November that it has developed direct carbon fuel-cell technology. Read more