Almost everywhere you look, you’ll find one — or dozens — of the six-legged critters called insects. A wildly diverse bunch, the class Insecta includes ants, bees, flies, beetles and much more. These creatures all possess a body composed of three segments — head, thorax and abdomen — encased in a hard exoskeleton. All insects also sport a pair of antenna, compound eyes and three pairs of jointed legs. From that basic body plan, emerge all sorts of amazing behaviors and abilities, as Live Science reveals here in 20 startling facts about insects.