Source: theguardian.com Published: June 21, 2016 The weight of light: how gravity is illuminating sub-Saharan Africa Banyak and Michael Tait Off-grid communities such as those in sub-Saharan Africa can pay thousands of times as much as the rest of us for their energy....
Source: sciencealert.com Published: May 28, 2015 GravityLight FIONA MACDONALD Although many of us take for granted the fact that we can simply hit a switch and be flooded with artificial light, around one billion people in the world still live without electricity....
