The document provides evidence that global warming is occurring due to human activity. It notes that carbon dioxide emissions have increased, most of the world has warmed, Arctic and Antarctic ice caps are melting faster than previously thought, global sea levels have risen 10-25 cm in the last century, and the greenhouse effect is trapping more heat due to increased greenhouse gases like carbon dioxide and methane. While some natural climate variability occurs, mainstream scientists believe human emissions are enhancing the greenhouse effect and warning the planet, threatening life if emissions are not reduced. Burning fossil fuels also creates pollutants that cause "global dimming" by making clouds more reflective, offsetting warming slightly.
![Some Evidence for Global warming ,[object Object],As you can see the majority of the world has undergone a gradually heating effect.](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)