Much like the different environments of a forest floor and treetops, interactions among insects vary within the much smaller-scale vertical zones of a turfgrass “canopy.” Researchers using clay models of caterpillars to lure predatory arthropods are revealing what a difference a few centimeters can make. Here, University of Georgia entomologist Fawad Z.A. Khan, Ph.D., places clay models in grass as part of a recent study. (Photo courtesy of Shimat V. Joseph, Ph.D.)