By now most people know that exposure to lead is harmful. However, back in the 1800s not so much. Then on July 9th, 1978 a chemistry professor announced the results of his research and warned that lead must be removed from all consumers products. It took a century before decision makers took full action. The Michigan History Center's Rachel Clark explains how Professor Robert Kedzie sounded the lead alarm and was ignored for decades.

GUESTS:

Rachel Clark, Michigan History Center's education specialist 

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