 The study found that geographically isolated wetlands, GIWs, are more effective at removing nitrogen pollutants than previously thought. The researchers used remote sensing data to analyze the effects of transient hydrology on these wetlands, finding that they were able to remove up to 130% more nitrogen than previously estimated. These findings suggest that GIWs should be given special protection because of their ability to filter nitrogen pollution. This article was authored by Frederick Wai-Cheng, June Hai-Yong Park, Mewkesh Kumar, and others.