This document provides an overview of different types of energy. It discusses energy sources and categorizes them as renewable or non-renewable. The document notes that most current energy consumption comes from non-renewable sources like fossil fuels and nuclear power, which causes various environmental problems including increased greenhouse effect, acid rain, oil spills, nuclear waste, rising water temperatures and atmospheric pollution. It also describes energy power stations and provides an example of a wind turbine that can produce drinking water from humid air.