A federal trial is underway involving car companies and Vermont over the state's regulation of CO2. Dan Esty, who teaches environmental law at Yale University, lays out the issues with Kai Ryssdal.

A U.N. report warns poor countries will be hit hardest with famine, fresh water shortages, and coastal flooding unless global warming is slowed. Solving the problem will require a huge infusion of cash from Western nations.

The latest UN report on climate change puts forth the bleakest outlook yet, saying warming will cause more damage than previously forecast — and sooner.

One influential data company is factoring climate change into its prediction that the coming hurricane season will be a rough one. And it's having a big effect on on hurricane insurance rates.

Al Gore returned to Congress today to testify about global warming. He even spoke before the committee chaired by Rep. John Dingell, who hasn't exactly enlisted in the climate-change fight. John Dimsdale covered the hearings.

China has a new corporate tax law for foreigners who want to do business there. Scott Tong went to Hunan Province, where business people say it's about time.

U.S. and foreign auto execs and the UAW are lobbying hard in Washington against proposals requiring higher gas mileage. Sam Eaton reports on the high stakes of climate-change legislation.

A bill unveiled in Britain today would commit the government to cutting carbon emissions by 60 percent by the middle of the century. Stephen Beard reports.

You don't have to spend a lot to lower your energy consumption. From North Carolina Public Radio, Janet Babin reports.

The U.S. is going to have trouble funding alternative energy if it waits for a carbon tax. Commentator Robert Reich says we should look to oil companies to provide the money.