Looking to go green? Ann Arbor’s municipal Materials Recovery Facility provides free Saturday open houses for the public to view its recycling operations as well as hands-on activities for children. Saturday open houses are held from 10am-12pm. The next activity on Saturday, December 10, is Papermaking! Children can learn to save the planet and make their own sheet of recycled paper. The activity and open house is free, but groups of five or more are asked to pre-register.