The climate is changing, and these changes are affecting the world around us. In order to deal with the changes that are taking place now and to prepare for those that are likely to happen in the future, decisionmakers need information about global change and its effects on the Nation and the world we live in. This national scientific assessment integrates, evaluates, and interprets the findings of the U.S. Climate Change Science Program (CCSP) and draws from and synthesizes findings from previous assessments of the science, including reports and products by the Intergovernmental Panel on Climate Change (IPCC). It analyzes current trends in global change, both natural and human-induced, and it projects major trends for the future. It analyzes the effects of these changes on the natural environment, agriculture, water resources, social systems, energy production and use, transportation, and human health. It is intended to help inform discussion of the relevant issues by decisionmakers, stakeholders, and the public. As such, this report addresses the requirements for assessment in the Global Change Research Act of 1990. This assessment addresses not only climate change, but also other change in the global environment including water resources, oceans, atmospheric chemistry, land productivity, and ecological systems that may alter the capacity of Earth to sustain life. This broader set of changes is referred to as 'global change,' as defined in the Global Change Research Act. Over the past several years, our understanding of climate variability and change and our ability to estimate their future effects has improved significantly. The conclusions in this assessment build on the vast body of observations, modeling, decision support, and other types of activities conducted under the auspices of CCSP and from previous assessments of the science. This assessment and the underlying assessments have been subjected to and improved through rigorous peer reviews.

This scientific assessment was reviewed in draft form by individuals chosen for their breadth of perspective and technical expertise. The purpose of the independent review was to provide candid and critical comments that helped ensure the scientific soundness of the published report. The review comments remain confidential to protect the integrity of the deliberative process.

Over the past several years, our understanding of global environmental change and our ability to estimate its future effects has improved significantly. In order to summarize the key conclusions of this research, the U.S. Climate Change Science Program (CCSP) has undertaken a national scale "Scientific Assessment of the Effects of Global Change on the United States." The conclusions in this assessment build on the vast body of observations, modeling, decision-support, and other types of activities conducted under the auspices of CCSP. It draws on findings from previous assessments of the science, including reports and products by the Intergovernmental Panel on Climate Change, (IPCC), CCSP, and others. Together with CCSP's 21 Synthesis and Assessment Products, this is arguably the most comprehensive assessment to date of the effects of global change, and especially the climate, on the United States.

Summarizes the science of climate change and impacts on the United States, for the public and policymakers.

Over the past several years, our understanding of global environmental change and our ability to estimate its future effects has improved significantly. In order to summarize the key conclusions of this research, the U.S. Climate Change Science Program (CCSP) has undertaken a national scale "Scientific Assessment of the Effects of Global Change on the United States." The conclusions in this assessment build on the vast body of observations, modeling, decision-support, and other types of activities conducted under the auspices of CCSP. It draws on findings from previous assessments of the science, including reports and products by the Intergovernmental Panel on Climate Change, (IPCC), CCSP, and others. Together with CCSP's 21 Synthesis and Assessment Products, this is arguably the most comprehensive assessment to date of the effects of global change, and especially the climate, on the United States.

As global climate change proliferates, so too do the health risks associated with the changing world around us. Called for in the President’s Climate Action Plan and put together by experts from eight different Federal agencies, The Impacts of Climate Change on Human Health: A Scientific Assessment is a comprehensive report on these evolving health risks, including: Temperature-related death and illness Air quality deterioration Impacts of extreme events on human health Vector-borne diseases Climate impacts on water-related Illness Food safety, nutrition, and distribution Mental health and well-being This report summarizes scientific data in a concise and accessible fashion for the general public, providing executive summaries, key takeaways, and full-color diagrams and charts. Learn what health risks face you and your family as a result of global climate change and start preparing now with The Impacts of Climate Change on Human Health.

This national scientific assessment integrates, evaluates, and interprets the findings of the U.S. Climate Change Science Program and draws from and synthesizes findings from previous assessments of the science. It analyzes current trends in global change, both natural and human-induced, and projects major trends for the future. It analyzes the effects of these changes on the natural environment, ag., water resources, social systems, energy production and use, transport., and human health. This assessment addresses not only climate change, but also other change in the global environment ¿ including water resources, oceans, atmospheric chemistry, land productivity, and ecological systems¿that may alter the capacity of Earth to sustain life. Ill.