Did you know that nuclear energy provides about 13% of the world's electricity? A nuclear reactor the size of a hot tub can power 20,000 homes. As our energy needs grow, scientists and other innovators are seeking new energy sources that are efficient, sustainable, and environmentally friendly. In this book, you'll examine nuclear energy, weigh its benefits and risks, and look at how we are using nuclear power now and how nuclear energy might fit into our energy future.