Global warming refers to the gradual increase in Earth's average temperature due to the buildup of greenhouse gases like carbon dioxide and methane in the atmosphere. These gases trap heat from the sun, creating a "greenhouse effect" that leads to changes in climate patterns. Human activities, such as burning fossil fuels and deforestation, have significantly contributed to this problem. As temperatures rise, we experience more extreme weather events, melting ice caps, and rising sea levels. This can threaten ecosystems and wildlife, as well as human communities. Addressing global warming requires collective efforts to reduce emissions and promote sustainable practices, such as using renewable energy sources like solar power and wind energy.