By Sheri Quinn
http://stream.publicbroadcasting.net/production/mp3/kuer/local-kuer-763779.mp3
Salt Lake City, UT – Vehicles cause at least half of the air pollution along the Wasatch Front. To improve air quality Salt Lake City and Salt Lake County start the Idle-Free Utah campaign today and 63 elementary schools around the valley are joining the effort. Sheri Quinn reports.