Fourth Assessment Report (AR4)

The Fourth Assessment Report (AR4), released in 2007 by the Intergovernmental Panel on Climate Change (IPCC), summarizes scientific research on climate change. It explains how the Earth's climate is warming due to human activities, mainly the release of greenhouse gases from burning fossil fuels. The report details the observed impacts, such as more frequent extreme weather events, rising sea levels, and threats to ecosystems and agriculture. It emphasizes the need for immediate action to reduce emissions and adapt to changing conditions to avoid severe future consequences. AR4 is a comprehensive assessment guiding global climate policies and awareness.