GravityLight is a revolutionary new approach to storing energy and creating illumination that is powered soley by gravity. The lamp uses no batteries or fuel and has no operating costs after the initatal purchase price of $5 making it a fantastic alternative to the expensive and hazardous kerosene lanterns, which are widely used in developing countries.
All posts tagged human power
Playpumps are a low tech solution to one of Africa’s greatest challenges – access to clean drinking water. This life changing invention, utilizes human power – harnessing the power of play to pump water. As children play on a specially designed merry-go-round, borehole water is pumped into and stored in a 2,500 litre tank, where it can be accessed when needed.