This document discusses global warming, its causes, and effects. Global warming refers to the rise in Earth's temperature caused by greenhouse gases like carbon dioxide released from human activities such as burning fossil fuels. The planet's temperature has increased 1.33 degrees Fahrenheit in the last century and is predicted to rise 3-9 more degrees in this century. This warming causes effects like more droughts and diseases, melting polar ice caps, and stronger hurricanes. The document suggests ways to reduce global warming like using energy more efficiently and driving fuel efficient vehicles.