January 23, 1989 - Barry Commoner, author and scientist, speaking at Luther College in Decorah, Iowa. Commoner addresses the topic "Development of Health for All: The Environment."
February 24, 1989 - MPR's Mark Heistad and Tom Meersman present "Poisoned Waters," a documentary about groundwater contamination problems in Minnesota. Documentary contains reports from Lakeland, Northern Township in Beltrami County, New Brighton, and agricultural land in the southeast of state.
March 7, 1989 - Dean Abrahamson, professor of public affairs and director of the Global Environmental Policy Project at the Humphrey Institute, discusses the latest developments in the global warming crisis. Topics include CFCs, debate on average temperature rise, climate patterns, and the future consequences. Abrahamson also answers listener questions.
March 8, 1989 - Bill Rathje, archaeologist from the University of Arizona in Tucson, speaking at National Recycling Coalition conference held in St. Paul. Rathje’s address was titled "What Our Landfills Say About Us." After speech, MPR’s Dan Olson interviews Cathy Berg Moeger, environmental planner and pollution control specialist with the Minnesota Pollution Control Agency. Moeger answers listener questions about recycling efforts in Minnesota. The 7th National Recycling Congress was held in St. Paul on September 27, 1988.
April 19, 1989 - MPR’s Stephen Smith and Tom Meersman present “Burning the Needles,” a documentary report on the issues of medical waste and the challenges in how to dispose of it.
May 6, 1989 - Don Willeke, chairman of the Minnesota State Shade Tree Advisory Committee; and Dr. David French, professor of plant pathology and forestry resources at the University of Minnesota, discuss tree diseases, treatments, and tree planting at the start of Arbor Month. Willeke and French also answer listener questions.
May 8, 1989 - Amory Lovins, founder and research director of the Rocky Mountain Institute in Snowmass, Colorado, discusses his organization. Other topics include energy, environment concerns, and renewal. Lovins also answers listener questions.
May 9, 1989 - Mainstreet Radio’s Leif Enger reports on the concern over contaminants such as mercury, PCBs, and dioxin in northern Minnesota fish. Some are concerned that the contaminated fish might cause a decrease in fishing and tourism, but others said there are simply nothing to worry about.
May 9, 1989 - Part One: A documentary about health advisories regarding fish contamination in Minnesota, and David Gray, chief of Health Risk Assessment for the Minnesota Health Department answering listener questions on the topic. Part Two: Pamela Skoog Perry, nongame wildlife specialist from the Department of Natural Resources office in Brainerd answers listener questions about aquatic wildlife and loons.
October 11, 1989 - Barber Conable, president of World Bank, speaking at Minnesota Meeting. Conable’s address was titled “Fighting Poverty, Encouraging Growth and Protecting the Environment: The World Bank's Agenda for the 1990s.” Following address, Conable answered audience questions. Minnesota Meeting is a non-profit corporation which hosts a wide range of public speakers. It is managed by the Hubert H. Humphrey Institute of Public Affairs at the University of Minnesota.