Montana Decides Whether to Keep Taxing to Fund Public Colleges Listen Download Embed Share Share this on Facebook (Opens in a new window) Share this on Twitter (Opens in a new window) Share this via Email Trevyn Carter, Josiah Matt, John Ranieri and Denzel Lefthand listen as Holly Church explains how to interpret readings from a water quality instrument. ( Kristine Paulsen/For WGBH News ) Produced by Alexandra Botti Produced by PRI and WNYC