This article does not mention climate change, salinization, loss of glaciers (to feed rivers) contamination of soil and groundwater (from mining or maybe all th

This article does not mention climate change, salinization, loss of glaciers (to feed rivers) contamination of soil and groundwater (from mining or maybe all the fracking the US has been doing) over-irrigation. These and others are real threats the US faces and will result in reduced fresh water and food.