Steve A. Johnson via flickr

KUNM Call-In Show Thu. 3/20 8a:  The US has been adding fluoride to water supplies for almost 70 years, and no conclusive evidence links its use to poor public health.  But in many communities, including Santa Fe and Albuquerque, the topic is highly controversial.   This week on the KUNM Call-In Show, we'll talk with advocates on both sides of the issue in advance of an April 9 town hall in Albuquerque.