Climate change refers to long-term shifts in temperature, precipitation patterns, and other atmospheric conditions on Earth, primarily driven by human activities such as burning fossil fuels, deforestation, and industrial processes. Evidence of climate change includes rising global temperatures, melting polar ice caps, increasing sea levels, and more frequent extreme weather events. Scientific consensus, based on data from ice cores, satellite measurements, and climate models, indicates that these changes are largely a result of increased greenhouse gas emissions, particularly carbon dioxide. The impacts are already being felt globally, affecting ecosystems, human health, and economies. Addressing climate change requires urgent, coordinated global efforts to reduce emissions and mitigate its effects.