"There are currently over 1.5 billion people in the World who have no reliable access to mains electricity. These people rely, instead, on biomass fuels (mostly kerosene) for lighting once the sun goes down. We propose a sustainable lighting solution powered by gravity."
03 January 2013
GravityLight ~ Deciwatt's Cheap Lamp Solution!
Thanks to tywkiwdbi for spotting Deciwatt's GravityLight on Indiegogo...