As awareness of the dangers tied to global warming and fossil fuels grows, green energy is playing a bigger part in how people are powering their communities. Each of the books in the Alternative Energy series introduces an ecofriendly energy source by explaining its history, how it works, its pros and cons, and its future potential. . . .They succeed in contextualizing each resource within a larger conversation on the relationship between energy and the environment. Critical-thinking questions linked to the publisher’s website join primary source excerpts, sidebar facts, and color illustrations for a rounded learning experience.