Where does the energy we use come from? It's absolutely vital to every single thing we do every day, but for most people, it is utterly invisible. Flick a switch and the lights go on. It might as well be magic. Science writer Jeremy Shere shows us in Renewable: The World-Changing Power of Alternative Energy that energy is anything but magical. Producing it in fossil fuel form is a dirty, expensive--but also hugely profitable-- enterprise, with enormous...