When the sun goes down many developing countries rely upon dangerous kerosene lamps, which emit hazardous fumes and generate 190 million metric tons of CO2 each year. Seeking an eco-friendly alternative to this trend, four Harvard engineering students developed the Soccket – a soccer ball that generates and stores electricity during play. Soccer is found in just about every African country, so the energy-generating ball has great potential to encourage healthy activity while producing clean electricity to light up the night.