MIT researchers have produced what they believe is the thinnest, lightest solar cell ever produced, capable of being installed on almost any surface or device. In lab tests, the new process results in a super-thin solar cell that is so light it can be placed on the surface of a soap bubble without causing the bubble to burst. Although the technology is still years away from commercial production, this breakthrough could one day lead to a world without cell phone charging cables, and give us the ability to power nearly any portable device with a built-in solar array without adding substantial weight or bulk.