June 9, 1990 -
April 21, 1990 - Gaylord Nelson, founder of the first Earth Day, discusses the original twenty-million people demonstration that took place in 1970, the many environmental issues and development of a conservation movement. Gaylord also shares his thoughts on preparing for the twenty-year anniversary in 1990.
April 21, 1990 - On this Saturday Midday, Cathy Berg Moeger, supervisor of solid waste program at the Minnesota Office of Waste Management, discusses household recycling and ban of yard waste disposal. Moeger also answers listener questions.
April 21, 1990 - Gaylord Nelson, former Wisconsin U.S. Senator, discusses the founding of first Earth Day 1970.
April 20, 1990 - A profile of one of America's most influential environmental writers, Aldo Leopold, who was also an accomplished biologist.
January 29, 1990 - Documentary report on heart transplantation, its rise over the last decade, and the shortage of donor organs.
January 27, 1990 -
January 27, 1990 -
January 13, 1990 - Minnesota Historical Society president Nina Archabal takes listener's questions about Minnesota history.
December 30, 1989 -