A "hobo" clown at heart, down on my luck (previously but not now), but eternally optimistic :o)
Mar 16, 2010
Science Scene - Solar Power via USB
The SolarFold and SolarFan portable solar chargers unfold into surface-area-utilizing solar collectors when needed, supplying enough power to make a three-minute cell call after just ten minutes in the sun.
Made by AmbienTec, the chargers run about $250 each and power just about anything that can juice up via USB. The devices haven't hit U.S. stores yet, but AmbienTec will happily sell you one directly.