Small energy sources: choices that work
Science and technology
Human-transcribed braille
Summary
The author details environmentally sound approaches to energy production. Individuals and communities are using the sun, earth, wind, and water to produce energy cheaply and efficiently. Anecdotes explain how methane is collected from manure, how liquid fuel is derived from… sugarcane, and how some farmers are harvesting hybrid trees for new energy sources. For junior and senior high readers