It’s What On Top That Counts craigshieldsPosted on October 5, 2018 Posted in Sustainable Building Here’s a wonderful little video on green roofs. So much to like: CO2 absorption, habitat for birds, a place to grow local food, and best of all, fabulous insulation, meaning less energy used for HVAC. ‹ Why You’re Not Reading About Climate Change Words on Sustainability from George Washington Carver ›