Aug 29, 2005 — This winter, state and local road crews will dump thousands of metric tons of salt on north country roads. The salt helps keep highways safe, preventing ice build-up and accidents. But environmentalists say the chemical is washing down into formerly pristine lakes and river. A research team from Clarkson University is studying the amount and the impact of salt collecting in the Cascade Lakes near Keene. Brian Mann spent a day with the scientists and sends this report.