(CNN) — Turning grandmothers into solar engineers is one of Sanjit “Bunker” Roy”s favorite jobs. Roy is the social entrepreneur and founder of the Barefoot College and has been championing a bottom-up approach to education and empowering rural poor since 1972. It is now a global enterprise with roots in India. Roy recruits women from … Continue reading ‘Barefoot’ grandmothers electrify rural communities