global warming

Global warming is one of the most serious challenges facing us today. To protect the health and economic well-being of current and future generations, we must reduce our emissions of heat-trapping gases by using the technology, know-how, and practical solutions already at our disposal.
Nuclear Power Loan Guarantees Shrivel: The nuclear industry is touting the passage of the omnibus appropriations bill as a victory, but in fact Congress did not rally behind loan guarantees for nuclear power.
Nuclear Power in a Warming World: In this new report, UCS describes the role nuclear power should play as a climate change solution.
Senate Committee Passes Historic Bill to Reduce Global Warming Pollution
Senate Climate Bills Backgrounder: The Senate Commerce, Science and Transportation Committee approved three climate science bills in early December.
Bali Bulletin: Get updates on UCS efforts at the United Nation's climate negotiations in Indonesia.
How to Avoid Dangerous Climate Change: A Target for U.S. Emissions Reductions A new UCS report provides the analytic basis for the 80% reductions target.
Cap-and-Trade Backgrounder: We Need a Well-Designed Cap-and-Trade Program to Fight Global Warming
Regional Cap-and-Trade Programs: In the absence of federal action, Northeastern and Western states have adopted cap-and-trade programs to reduce global warming pollution emissions in their respective regions. Confronting Climate Change in the U.S Northeast: Science, Impacts and Solutions A new report from the Northeast Climate Impacts Assessment, a collaboration between the Union of Concerned Scientists and more than 50 independent scientists and economists.
Tropical deforestation and global warming: New science underscores the value of a climate policy iniative to reduce emissions from tropical deforestation
Findings of the IPCC Fourth Assessment Report: Climate Change Mitigation
Findings of the IPCC Fourth Assessment Report: Climate Change ImpactsFindings of the IPCC Fourth Assessment Report: Climate Change ScienceThe IPCC: Who are they and why do their reports matter?Smoke, Mirrors & Hot Air: How ExxonMobil Uses Big Tobacco's Tactics to Manufacture Uncertainty on Climate Change


Climate Change in the U.S. Northeast See how global warming is changing the Northeast—and how choices we make today will determine our children's and grandchildren's quality of life.

Migrating State Climates This animation shows potential temperature shifts in your state due to global warming.



ClimateChoices.org California faces a choice on global warming.


The groundbreaking science we introduced in Climate Change in California: Choosing Our Future, has galvanized support across the state for measures to reduce heat-trapping gas emissions.
Senior Scientist and Director Peter Frumhoff was named a lead author for the forthcoming Intergovernmental Panel on Climate Change Fourth Assessment Report.
We drew much-needed attention to the increasing pace of climate change in the Arctic.
We've grown support in both houses of Congress for strong national action on climate change, such as the Climate Stewardship Act.