A new exhibition in Philadelphia traces two hundred years of the science behind water pollution. WHYY’s Peter Crimmins reports on “Downstream” at the Science History Institute in Center City.
(Original air-date: 9/13/21)
A new exhibition in Philadelphia traces two hundred years of the science behind water pollution. WHYY’s Peter Crimmins reports on “Downstream” at the Science History Institute in Center City.
(Original air-date: 9/13/21)