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Home > Archives for MN90: Minnesota History in 90 Seconds

MN90: Minnesota History in 90 Seconds

MN90 is fun exploration of wide-ranging topics including sports, politics, environment, business, entertainment, pop culture, and more.

March 25, 2025
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Melvin Calvin and the Life Cycle of Plants

Many high school students learn about photosynthesis in their biology classes. However, some may not know about one Minnesotan who was crucial to discovering plant life cycles. [Read Transcript...]

March 25, 2025
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The Great Mill Disaster

Minneapolis faced one of its most tragic events in 1878 after a cloud of flour dust got mixed up in a fiery situation. [Read Transcript...]

March 25, 2025
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Frances Densmore

What if the songs of a culture could disappear forever? Frances Densmore of Red Wing, Minnesota wanted to ensure they didn’t. A pioneer in ethnology, Frances Densmore helped preserve Indigenous stories and songs across the state. [Read Transcript...]

February 21, 2025
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Self-Inflating Life Preservers

After fears of drowning were rising among his customers, Peter Markus knew it was up to him to invent a new way of staying afloat should a boat capsize. [Read Transcript...]

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Funding for arts, cultural, and historical programs on this site is made possible by the Minnesota Arts and Cultural Heritage Fund and the citizens of Minnesota. For more information about Ampers’ Arts and Cultural Heritage Fund (Legacy) programming click here.

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The Association of Minnesota Public Educational Radio Stations (AMPERS) is a registered 501(c)(3) nonprofit. EIN: 41-1388406