Global warming is caused by greenhouse gases like carbon dioxide and methane trapping heat in the atmosphere and increasing temperatures. This damages the environment. Some causes of global warming include burning fossil fuels for electricity and cutting down trees. Effects of global warming include more fires destroying forests. People are trying to reduce global warming through actions like carpooling, conserving energy, and regulations like the Clean Air Act that limit pollution from industries and vehicles. Protecting the environment is important for health and safety.