Summary Organizational records of the Eau Claire Area Ecology Action (ECAEA), later renamed Northern Thunder, and the National Environmental Teach-in. The ECAEA grew out of a local teach-in to observe “Earth Day” on April 22, 1970. While their first project focused on the water quality of the Chippewa River, their focus quickly turned to the issue of solid waste, such as recycling and nuclear power. Records include newspaper clippings, newsletters, administrative material, letters, papers, speeches,...