Selected Readings and Content Bulletins & Factsheets The Climate-Friendly Gardener: A Guide to Combatting Global Warming from the Ground Up, Union of Concerned Scientists Gardening in a Warming World, A Climate Smart Gardening Course Book (PDF), Cornell Cooperative Extension Ecosystem-Based Effects, eXtension Gardener’s Guide to Global Warming (PDF), National Wildlife Federation Zone Changes, USDA Websites