Skip to main content
U.S. flag

An official website of the United States government

Fifth National Climate Assessment - Read the Report

IPCC. Climate Change 2007: Impacts, Adaptation, and Vulnerability

This report is the contribution of Working Group II to the IPCC's Fourth Assessment Report. It is a comprehensive assessment of the current knowledge of the impacts of climate change, the vulnerability of natural and human environments, and the potential for response through adaptation. In addition to the full report, it includes a technical summary, a summary for policymakers, and frequently asked questions.