Two new studies have shed light on some of the primary culprits in the degradation of the Gulf of Mexico and the Mississippi River.

As of Oct. 2, 2007, NOAA and EPA are making daily local forecasts of ground level ozone for the entire contiguous U.S. The latest upgrade adds forecast information for 11 Western states, and improves forecasting for 6 others.

When considering the impact of transportation on the environment, most people think of cars. However, air travel is gaining increasing scrutiny as a climate change culprit.

Big banks take greenhouse gas emissions into account when assessing risks of financing power plants

One of those problem areas is the thousands of old mines that were dug to extract uranium ore. During the era from the 1940s to the 1980s when most were excavated, many were simply abandoned when they played out or the economic incentives changed. Radioactivity now contaminates many sources of human and environmental exposure.

Hunters' lead shot and anglers' lead sinkers are still a pollution source, despite rules restricting them.