50 years of 'Spring' City Pulse 
“Echoes of Silent Spring: 50 Years of Environmental Awareness,” an exhibit at Michigan State University’s Natural Science and Culture Museum, provides the context for the landmark book. It also shows how research conducted at Michigan State University in the 1950s detailing the impact of DDT (dichlorodiphenyltrichloroethane) spraying on birds played a large role in why Carson wrote “Silent Spring.”

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