May 23, 1987 - On this Weekend program, Kathy Heidel, naturalist for Hennepin Parks, leads a walking tour through Carver Park Reserve, identifying a variety of bird calls, describing wild plant and animal life, including a nesting pair of ospreys.
August 4, 1987 - Tom Kalitowski, executive director of the Minnesota Pollution Control Agency, discusses air and water quality, hazardous waste, and other current pollution issues. Kalitowski also answers listener questions.
August 15, 1987 - On this Weekend program, MPR’s Bob Potter talks with Kathy Heidel, naturalist with the Hennepin County Park Reserve System. They discuss the “dog days” of summer. Topics include the high temperatures, birds, and bees. Heidel also answers listener questions.
August 22, 1987 - On this Weekend program, Ron Willis, deputy meteorologist-in-charge of the Twin Cities National Weather Service office discusses late summer weather, thunderstorms, and possible outlook for the fall. Willis also answers listener questions.
September 25, 1987 - Dr. Robert Pepin, professor of physics at the University of Minnesota, and chair of the National Academy of Sciences Committee on Planetary and Lunar Exploration, discusses what is next for space exploration and the U.S. Space Program. Topics include traveling to Mars, conditions of space on the human body, rocket capabilities, and the status of Hubble telescope launch. Pepin also answers listener questions.
December 12, 1987 - On this Weekend program, Dr. Dean Abrahamson, professor of public affairs and director of the Global Environmental Policy Project at the Humphrey Institute, discusses the causes of world climate change and the implications. Topics include the carbon dioxide, changes in climate patterns, and the long-term consequences of global warming. Abrahamson also answers listener questions.
January 4, 1988 - Dr. Arthur Caplan, director of the Center for Biomedical Ethics at the University of Minnesota, discusses the ethical issues surrounding recent advances in medicine. Caplan also answers listener questions.
January 25, 1988 - Mainstreet Radio's Leif Enger interviews northern Minnesotan farmer Floyd Cartwright and others about weather “prophesying.”
April 12, 1988 - Sir Hans Kornberg, a biochemist and master of Christ’s College Cambridge, speaking at Minnesota Meeting. Kornberg’s address was on topic "Genetic Manipulation: Threat or Promise? A View from the United Kingdom." Kornberg describes the scientific advances and his belief of regulatory processes needed to protect environment. 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.
April 22, 1988 - MPR’s Jim Neumann reports on scientific conference being held in Duluth to discuss researching water quality of Lake Superior. Neumann interviews two scientists that are attending conference.