What is a renewable energy source? Is nuclear power a good source of energy?Why are wind farms so controversial? And how is energy linked to climatechange? This... » 

What is a renewable energy source? Is nuclear power a good source of energy?Why are wind farms so controversial? And how is energy linked to climatechange? This title answers these questions and others. From turning off lightsto hydroelectric schemes it looks at issues surrounding the worlds energysupplies and the demand for energy. «