The National Nuclear Security Administration (NNSA) today released the executive summary of a new report that should put an end to claims that new nuclear weapons are required to maintain a safe, secure and reliable nuclear arsenal, according to experts at the Union of Concerned Scientists (UCS).

The Environmental Protection Agency (EPA) will hold a hearing today in Chicago to give the public an opportunity to weigh in on the agency's proposal to begin regulating global warming gases from power plants, oil refineries, factories and other major sources. The agency held a similar public hearing yesterday in Arlington, Virginia.

China and the United States today released a joint statement at the conclusion of formal talks between President Obama and President Hu Jintao that included agreements on nuclear weapons issues and cooperation in space.

In a paper published today in the scientific journal Current Biology, an international group of leading conservation scientists conclude that plans to reduce heat-trapping emissions from tropical forests must include provisions to protect plants and animals from extinction.

Holiday travelers can save money and reduce their contribution to global warming at the same time, thanks to a handy green travel guide from the Union of Concerned Scientists (UCS).

While participants at the UN climate negotiations In Barcelona made some progress on the negotiating text, they still have not agreed on such key issues as developed countries’ emissions reductions, U.S. commitments, or financing to help developing countries adapt to climate change and reduce their own emissions.

Scientists and non-governmental organizations at the UN climate negotiations In Barcelona said the percentage of global warming emissions that is due to tropical deforestation totals about 15 percent, as described in a new analysis published in Nature Geoscience.

The Senate Environment and Public Works (EPW) Committee passed the “Clean Energy Jobs and American Power Act” this morning, setting the stage for the rest of the Senate to move forward with legislation. The fact that EPW finalized a bill shows that the United States is serious about addressing climate change, which should help pave the way for an international climate treaty, according to the Union of Concerned Scientists (UCS).

The Union of Concerned Scientists today asked Congress to adopt strong transparency and accountability standards for each advisory committee created by any new health care law.

Earlier this week the Nuclear Energy Institute (NEI), the nuclear power industry’s principal trade organization, released a proposal asking for billions of dollars in taxpayer subsidies and radical changes to the federal regulatory process that would shift even more risks and costs from the industry to the public.

Peter Frumhoff, director of science and policy at the Union of Concerned Scientists (UCS), told the Senate Environment and Public Works Committee that the Senate climate and energy bill must include funding to help the United States and developing countries adapt to the unavoidable impacts of climate change.

The Senate may finally start debating climate and energy legislation now that Sens. Barbara Boxer (D-Calif.) and John Kerry (D-Mass.) have introduced the Clean Energy Jobs and American Power Act, but the addition of a nuclear provision to the bill raises some questions about whether we can afford more subsidies for nuclear power.

The United State's position hindered progress at the international climate negotiations that wrapped up in Bangkok today.

The Union of Concerned Scientists has assembled a detailed summary of key provisions in the recently introduced Kerry-Boxer Clean Energy Jobs and American Power Act.

George Will can’t seem to get his facts straight on global warming, but in his latest column he seems to be getting “warmer.”

Climate and energy legislation expected to be introduced today by Sens. John Kerry (D-MA) and Barbara Boxer (D-CA) could help pave the way for a new international climate treaty, according to the Union of Concerned Scientists.

In a "smoking is good for you" twist on reality, new ads actually call for higher levels of carbon dioxide, the primary heat-trapping gas driving global warming.

President Barack Obama and other world leaders closed their summit meeting in Pittsburgh with a commitment to phase out fossil fuel subsidies, but developed countries made no progress in following through on their pledge to provide financial and technological assistance to help developing countries limit their own emissions and adapt to the impacts of climate change.

This fall the Senate is expected take up a climate and energy bill that would establish a new agency within the Department of Energy to administer federal loan guarantees for private “clean” energy projects.

More than 200 scientists and economists issued a letter today calling on Congress and federal agencies to account for emissions from indirect land use change in biofuel laws and regulations.