I saw a good biofuels exhibit by the Minnesota Extension Service at the University of Minnesota Arboretum over the weekend.
In one exhibit, a living mass of moss covered a Volkswagon Beetle. In another, a farmer made from living plants sat a stride a Ford tractor. Both exhibits really brought to life the idea that farmers are “green.”
Other exhibits included plantings of corn, soybeans, sunflowers, barley, native grasses, aspens and willows. I particular liked the one showing how…