The world is our field site and gardens are our laboratories. This video is embedded within free resource webpages used in online courses for adult learners. All materials are copyrighted, contact Lesley Blair or Mark Lavery for permission to use beyond the naturejournals.org and vividscience.org websites, or for access to additional course materials. Discover science by exploring, describing, and explaining the natural world. Exercise safety in all activities and minimize impact to organisms and their environment.