This concept is the won the second place at the greener gadgets design competition. It’s a lamp powered by gravity. It looks like a big tube and has a weight that can slide from the top to the bottom. It will act like a dynamo and power the lamp for 4 hours. It’s a very neat concept that I would like to see come true. So if you have a lot of money and don’t know what to do with it. Please make it become reality!
You can watch the video at engadget.com