The document discusses global warming and its causes. It explains that global warming is driven by greenhouse gases like carbon dioxide and methane that are emitted through human activities like burning fossil fuels and deforestation. These gases trap heat in the atmosphere and cause the planet to warm up. If warming continues, it could lead to problems like rising sea levels from melting ice and glaciers, more extreme weather events, and species extinction as animals struggle to adapt to the changing climate. The document outlines the scientific consensus that human greenhouse gas emissions pose serious risks and that actions are needed to reduce their release into the atmosphere.