Most of our energy has come from oil, gas, and coal. Find out how we can heat and light our buildings, travel, and power our computers and devices without harming the planet in this resourceful title. Extracting resources damages the environment, and burning them contributes to global warming, harms our health, and pollutes the air and water. Case studies show how scientists are investigating renewable energy sources, such as wind and solar power, how to make homes and buildings more energy efficient, and how we can use less energy by changing our own behavior.