Global warming is the increase of the Earth's average surface temperature due to greenhouse gases like carbon dioxide and methane trapping heat in the atmosphere. The greenhouse effect occurs when heat and light from the sun are trapped in the Earth's atmosphere, causing temperatures to rise. Global warming is harming the environment by raising sea levels, killing algae in the oceans, causing more severe wildfires, and destroying forests. People are trying to reduce global warming through actions like carpooling, conserving energy, and policies that limit industrial pollution and greenhouse gas emissions. Solving global warming requires global cooperation and changes to individual lifestyles and habits.