A couple of weeks ago, we headed out to Potenco’s amazing headquarters at the decommissioned Alameda Naval Base to check out their power generator for the developing world. It looks a bit like a yo-yo ...

This week at TreeHugger: We revisit Potenco’s ingenious pull-cord generator, get some hands-on experience with it and get up close and personal with its human power generation goodness. Unipixel has ...