This presentation summarizes the greenhouse effect and its causes. It describes the natural greenhouse effect which involves greenhouse gases like carbon dioxide and water vapor trapping heat in the lower atmosphere, keeping the planet warm. It then discusses the man-made enhancement of this effect from burning fossil fuels, which increases greenhouse gas levels. Specific greenhouse gases are identified, and the presentation outlines some of the impacts of climate change like changes to weather patterns, water availability, and effects on human and animal populations. Ways to prevent man-made contributions are proposed, such as reducing consumption and waste.