From the early times through the Industrial revolution to the Space Age, humans have produced inventions that use many of the earth's varied energy resources to make living easier. In many cases the energy comes from burning fossil fuels such as coal, oil, and natural gas. Some of the inventions that make our lives easier are also causing pollution or the release of harmful substances into the environment. One form of pollution is acid rain, rain that is more acidic than normal. Acid rain can damage plants, animals, soil, water, building ....