While tomorrow's equinox marks the astronomical start of Fall, the changing colors make autumn visible. Silver maple and sumac offer the first red leaves of the season. West Michigan Weekly reports a 5% color change in Southwest Michigan, which sounds about right.
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.