This document discusses global warming and its causes. It explains that global warming is the increase of Earth's average surface temperature due to greenhouse gases like carbon dioxide trapping heat in the atmosphere. The primary greenhouse gases are water vapor, carbon dioxide, methane, nitrous oxide, and ozone. The document then lists some of the major impacts of global warming, such as sea level rise, more extreme weather, wildfires, health impacts, and damage to coral reefs. It also shows the top five countries by greenhouse gas emissions. Finally, it provides some solutions to global warming like reducing fossil fuel use, planting trees, reducing waste, and conserving water.