Global warming refers to the long-term rise in Earth's average surface temperature due to increased concentrations of greenhouse gases in the atmosphere. These gases—primarily carbon dioxide, methane, and nitrous oxide—are released through human activities such as burning fossil fuels, deforestation, and industrial processes. As their levels increase, they trap more heat in the atmosphere, leading to climate changes across the globe. One of the most visible effects of global warming is the melting of polar ice caps and glaciers, which causes sea levels to rise and threatens coastal communities. Additionally, global warming contributes to more frequent and severe weather events such as hurricanes, droughts, heatwaves, and floods. It also affects ecosystems and wildlife, disrupting natural habitats and leading to the extinction of certain species. Human health is at risk too, with increased cases of respiratory illnesses, heat-related conditions, and the spread of diseases. Tackling global warming requires global cooperation and strong action, including reducing carbon emissions, transitioning to renewable energy, improving energy efficiency, and protecting forests. Public awareness, policy changes, and technological innovations all play crucial roles in addressing this urgent issue. If left unaddressed, global warming poses a serious threat to life on Earth and the sustainability of future generations.