National Geographic

Tag archives for nitrate pollution

Stronger Efforts Needed to Reduce Nitrate Pollution in Mississippi River Basin

Despite growing concern over the last two decades about the low-oxygen “dead zone” that emerges each summer in the fisheries-rich Gulf of Mexico, the nitrate pollution at the root of the problem continues to rise. That’s the upshot of a study just released by the U.S. Geological Survey (USGS), which monitored nitrate trends at eight…