About two billion people have no steady supply of electric light. For light, they burn something, mostly kerosene, a dirty fuel. Now Nokero, a Hong Kong company, is set to market a solar light bulb that provides four hours of light. Single units are costly, but bulk orders would be discounted.
Architecture in recent years has been trying to combat the negative effects of construction on the atmosphere by leaning towards using more sustainable building and construction materials. Building high performance houses are one way that architects have been creating new buildings to reduce the energy used which is