The world can learn from Spain’s experience promoting a local solar power industry. Subsidies are needed to get a new industry started, but they can’t be too big or last too long if the industry is to be sustainable. Subsidies must be set carefully, or a boom and bust cycle can wipe out any gains.
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