This graph, based on key ice core data sets and recent monitoring programs, shows the variations in concentration of carbon dioxide (CO2) in the atmosphere during the last 400,000 years.

This video production is a part of a four-panel report from the National Academies' America's Climate Choices project. The video maps out the realm of our accumulated knowledge regarding climate change and charts a path forward, urging that research on climate change enter a new era focused on the needs of decision makers.

This video is the second of three short videos showcasing the dramatic changes in Alaska's marine ecosystems. The video highlights the marine mammals and birds and how they depend on Arctic sea ice, as well as questions about how these animals will cope in the face of climate change.

Global Sea Level Rise Scenarios for the United States National Climate Assessment

Global sea level has been steadily rising for decades and is expected to continue. Scientists have very high confidence that global sea level will rise at least another 8 inches and as much as 6.6 feet by 2100, causing significant impacts in U.S. coastal regions.  This report lays out the science and describes possible scenarios to help planners and policy leaders assess the risks.

Global Anthropogenic Non-CO2 Greenhouse Gas Emissions: 1990-2030

This summary report by the U.S. Environmental Protection Agency provides historical and projected estimates of emissions of non-carbon dioxide greenhouse gases (GHGs) from anthropogenic sources. The report provides a consistent and comprehensive estimate of non-CO2 greenhouse gases for 92 individual countries and eight regions. The analysis provides information that can be used to understand national contributions of GHG emissions, historical progress on reductions, and mitigation opportunities.

National Fish, Wildlife and Plants Climate Adaptation Strategy

From the Arctic to the Everglades, impacts like rising sea levels, warmer temperatures, loss of sea ice, and changing precipitation patterns are affecting the species we care about, the services we value, and the places we call home. Federal, state, and tribal partners with input from many other diverse groups from across the nation have worked to develop a common strategy to respond to these challenges.

Maine's Climate Future

A report that considers past change over geologic time, recent evidence of accelerated rates of change, and the implications of continued climate change in Maine during the 21st century as a result of greenhouse gas emissions and their associated pollutants.