Isthmus Green Day 2012: How do you 'go green?' by Isthmus Staff March 23, 2012 5:00 PM Back to Search Results × We asked, and you responded! Our on-the-street videographer Melissa Cooper caught up with some people, and this is what they said about how to "go green." Whether you have attended Isthmus Green Day Isthmus Green Day 2012 runs from 9 a.m.-5 p.m., and admission is free -- don't forget to save the date. Join us and discover how life can be healthier and happier for you, Madison, and the whole planet!