W.K. Kellogg Forest is about 15 miles from Kalamazoo. It's an experimental forest run by Michigan State University's Agricultural Experiment Station. If you visit, you can see plots where different species of trees have been planted and various treatments for managing woodlands. Most visitors simply enjoy a walk through the woods or a picnic along Augusta Creek. The loop road is open for mountain bikes and, in winter, skiing.
I teach economics at Kalamazoo College. My wife is also an economist. We were on sabbatical in Europe for the 2014-15 academic year. (Salamanca, Spain, followed by Oxford, UK.) We were in Uruguay for the 2006-7 academic year.