Crude oil and natural gas are two forms of fossil fuels. Harvesting and burning fossil fuels are incredibly harmful to the environment. Some of the planet's most biologically diverse habitats also feature large underground deposits of oil and gas. Oil drilling often results in spills, which threatens many plant and animal species. The fracking process can also leach carcinogenic chemicals into freshwater supplies, further putting biodiversity at risk. This book exposes the dangers of oil drilling and fracking and focuses on alternative energy sources. The topics covered adhere to elementary earth and life science curricula.