After receiving a low green ranking in Greenpeace’s Green Guide to Electronics, Apple has been making significant changes to be environmentally friendly. With the release of the MacBook Air, which includes a mercury- and arsenic-free display, a PVC- and BFR-free circuit board, and an aluminum case (plus less packaging), Apple's green score has already increased to 6.7. And now it has just filed a patent to place solar cells on portable devices.
What this means is that certain devices like the iPod Touch or iPhone could be manufactured to have photovoltaic cells stacked underneath LCD touch screens, enabling these gadgets to get juiced up from the sun! I'd love a solar/regular power option, so on rainy days I wouldn't have to go into panic mode if the sun wasn't shining!