I just figured you fed a bunch of gradeschool kids too many treats and put them in giant hamster wheels…that would work.
Sony’s battery boffins seem to have learnt some lessons from the previous few month’s, ahem, problems. They’ve developed a battery that generates power from sugar and, they claim, can create enough power to run an MP3 player.
The so-called “bio battery” generates electricity by mixing enzymes with a sugar solution. They break the sugar down into useable power, much like the process of converting food into energy in the human body.