From the website: Kent Kirby, professor, Department of Earth Sciences, University of Minnesota, will present “Volcanoes and Our Past” at the GSM lecture series.

The Geological Society of Minnesota (GSM) offers exciting, illustrated seminars presented by leading professionals in their fields of geology or earth science. These engaging talks are free and open to the public, and are especially valuable for enthusiastic learners from secondary school students to adults. A question and answer opportunity is included.