The original Earth Day took place on April 22, 1970, following on the heels of a teach-in on the environment, hosted by a handful of students and staff at the University of Michigan. Arthur J. Hanson, a former president of IISD, was one of them. Here, he reflects on how plans for a "relatively small event" exploded into a global movement.
I spent five days at the University of Michigan this March, celebrating the 50th anniversary of the Teach-in on the Environment that was held there from March 11 to 14, 1970.
At the time, I was studying for my PhD in ecology. The teach-in concept was cooked up by a small group and led by three of us—at first independently of Senator Gaylord Nelson and his idea of Earth Day, though we ultimately joined forces after a great deal of cross-communication. We mutually agreed that the University of Michigan event in mid-March would be the testing ground for the first Earth Day on April 22, 1970.
We had in mind a relatively small event, perhaps a thousand people. Given the times in the United States, we envisioned patterning it after the recent teach-ins on the Vietnam War.
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