Drinking water in the United States is at risk‚ scientists have said‚ as nitrogen pollution seems to be increasing. In a new study‚ scientists found that a third of the world's drinking water could be polluted with nitrogen by 2025. Researchers of the study are also concerned that water will not just be polluted‚ but there will be a severe lack of it at this time. And this could affect up to 3 billion people‚ the paper published in Nature Communications reports. "We are surprised that...