On the shore of Great Salt Lake, UtahCNN — Like the rest of the West, Utah has a water problem. But megadrought and overconsumption aren’t just threats to wildlife, agriculture and industry here. A disappearing Great Salt Lake could poison the lungs of more than 2.5 million people.

When lake levels hit historic lows in recent months, 800 square miles of lakebed were exposed – soil that holds centuries of natural and manmade toxins like mercury, arsenic and selenium. As that mud turns to dust and swirls to join some of the worst winter air pollution in the nation, scientists warn that the massive body of water could evaporate into a system of lifeless finger lakes within five years, on its way to becoming the Great Toxic Dustbowl.

Scientists fear a Great Toxic Dustbowl could soon emerge from the Great Salt Lake | CNN