http://www.indiegogo.com/projects/282006 "GravityLight is a revolutionary new approach to storing energy and creating illumination. It takes only 3 seconds to lift the weight which powers GravityLight, creating 30 minutes of light on its descent. For free." What are everyone's thoughts on this? I hope they succeed. I would like to see this happen. Imagine no lighting bills, except the initial expense of the equipment. It's eco-friendly so there's no pollution. Imagine of we had this kind of lighting before coal power. It might have influenced our approach to energy.