October 25, 1989 - MPR’s Gray Eichten interviews a Minnesota Department of Natural Resources fire expert on grass fire dangers found in the region due to drought conditions.
November 1, 1989 - Minnesota Department of Natural Resources Commissioner Joe Alexander answers listener questions about issues related to development, use, and preservation of the state's land, water, timber, fish, wildlife, mineral, and other resources.
January 6, 1990 - James Campbell, National Weather Service meteorologist, talks about winter weather. Topics include greenhouse effect, windchill, the North shore, and weather cycles. Campbell also answers listener questions.
January 9, 1990 - Mainstreet Radio’s Leif Enger reports on the upturn of wind turbines in the Red River Valley. Enger talks with users, suppliers, and energy officials about the potential future of this alternative energy source.
January 18, 1990 - MPR’s Joe Kelly visits Grand Marais and reports on the battle over shoreline regulations. After initial attempts at a state and federal management plan, local residents created the North Shore Management Board, with a plan for environmental protection and orderly growth along the North Shore.
February 17, 1990 - On this Saturday Midday, Deb Brown, U of MN Extension horticulturist, discusses indoor plants. Topics include types of plants and insects. Brown also answers listener questions.
March 26, 1990 -
April 17, 1990 -
April 21, 1990 - Gaylord Nelson, former Wisconsin U.S. Senator, discusses the founding of first Earth Day 1970.
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.