For example, my front yard came with a cement driveway. That pavement is hotter than my backyard with surrounding trees, bushes and ground covers. The deck, although wood, also is hotter than the rest of that backyard. During the winter, I rarely lose plants to frost near that deck, but 10 feet away, frost can kill fragile plants. Cities and counties, too, have such individual micro-climates. As we think about Gainesville and our county, we know where outside we don’t want to be during that long hot summer day, and we also know where in nature we’d like to be. Cooling trees and water both contribute to our response.