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.
April 26, 1990 - MPR’s Gary Eichten interviews Duluth resident and fisherman Russ Francisco about the declined interest of smelting along the North Shore rivers. Francisco explains what he sees and some of the reasons behind drop off.
May 10, 1990 -
May 29, 1990 - An MPR special documentary report titled, "Spearing on Lakes of Fire", narrated by Chris Tetlin. The report presents fishing debate over Chippewa Indian/U.S. Government treaty in northern Wisconsin. The controversy centers on walleyes, but there's much more at stake than fish.
June 20, 1990 - MPR’s Tom Meersman looks at the recent concerns of zebra mussel appearances in the Great Lakes. The species was confirmed in the Duluth/Superior Harbor in 1989. There is a fear of the negative impact it will have on Lake Superior’s local ecosystem, businesses, and municipalities.
July 10, 1990 - Barry Commoner, author, environmentalist, and director of the Center for Biology of Natural Systems, speaking at an environmental conference sponsored by Clean Water Action in St. Paul. Commoner told his audience of environmental activists that during the past 20 years, pollution control has been a total failure, and stated that society must challenge corporations to do business in an environmentally responsible way.
August 10, 1990 -
August 22, 1990 - Ralph Nader, consumer activist, speaking about at the Early Warnings Conference in Minneapolis, a meeting of print and broadcast journalists, environmental scientists and consumer activists. Nader's address was on the topic "Media and the Solar Age."