This document discusses global warming and climate change. It begins by explaining that scientists have warned the world's climate has changed significantly, affecting both living and non-living things. It then provides definitions for important terms like climate, weather, and the greenhouse effect. It describes how the greenhouse effect works, trapping heat in the atmosphere and warming the Earth. The document encourages individuals to reduce their electricity usage and carbon footprint by turning off appliances when not in use. It discusses using renewable energy sources like wind and solar power to help address global warming. In the end, it emphasizes the importance of learning about these issues and sharing information to help stop climate change.