Book excerpt: Green Travel Guide to Northern Wisconsin showcases the best green restaurants, lodgings, shops, and activities in Wisconsin’s Northland. Learn about exploring the cliffs and caves of the Niagara Escarpment while biking the Door Peninsula. Carpool to the Midwest Renewable Energy Fair in Custer where you can stay at a nearby solar-powered inn. Take an all day eco-geo-history tour of the north woods near Hayward, explore the Chequamegon-Nicolet Forest, kayak the Mississippi River backwaters, and much more.