Move over Popeye; it's possible that within a decade our cell phones and laptops could be powered by spinach. New research coming out of MIT(1) (in tandem with scientists from the Univ. of Tenn. and the U.S. Naval Research Lab.) indicates that a process similar to photosynthesis could be applied to devices that could then power themselves by sunlight.
The technology called Photosystem 1, works with nano-sized spinach protein clusters (100,000 would fit on a head of a pin) which are bonded to electrical circuitry. It's hoped that these ultra-thin layers will eventually be built right into the outer skin of a device, that could then charge itself on sunny days.