We talk to a farmer in Lone Rock who solved the problem of calves with cold ears and later created a small business around the idea.
Links
[1] https://www.wpr.org/programs/central-time
[2] https://www.wpr.org/people/kealey-bultena
[3] https://www.wpr.org/people/holly-poad
[4] https://www.wpr.org/people/tim-peterson