Montana Officials Close Yellowstone River To Fight Fish-Killing Parasite

A microscopic parasite is ravaging the fish population of the Yellowstone River in Montana prompting state officials to ban water-based recreation along a 183-mile stretch of the river and all of its tributaries.
Read more: http://www.npr.org/sections/thetwo-way/2016/08/19/490679757/montana-officials-close-yellowstone-river-to-fight-fish-killing-parasite?source=Snapzu