While carbon dioxide is indisputably a significant factor in the planet's changing climate, scientists and policy experts have faced major troubles in limiting production of the greenhouse gas. Now, some are focusing on other things that warm the planet, especially ozone and black carbon. And the tools to fight them are familiar.
Pennsylvania, Ohio and West Virginia are waiting to hear which state Shell Oil will pick to host a huge new chemical refinery. The project would turn ethane gas, produced through "fracking," into ethylene, which is used to make plastics. The venture could be the biggest investment in the region in decades.
Melissa Block speaks with Capt. Beverly Havlik, from the Coast Guard ice-breaker Cutter Healy, who talks about the challenges of helping a Russian tanker make its way through the Arctic ice to Nome, Alaska.
The U.S. Department of the Interior is placing a 20-year moratorium on new mining claims in and around the Grand Canyon. Environmentalists say the ban is crucial to protecting the region. However, the mining industry and some Republicans say the moratorium will be harmful to Arizona's economy and the nation's energy independence.
When you give to WAMU, your tax-deductible membership gift helps make possible award-winning programs such as Morning Edition, All Things Considered, The Diane Rehm Show, The Kojo Nnamdi Show, and other favorites.