Termites’ wood-heavy diet offers little nitrogen, a critical nutrient for growth and reproduction. But their exoskeletons are nitrogen rich, and new research shows that eating shed exoskeletons after molting is a core strategy for recycling nitrogen throughout the termite colony and boosting the queen’s egg-laying. Shown here are four colonies of Asian subterranean termites (Coptotermes gestroi) in "planar arenas" for observation in a lab. (Photo courtesy of Reina Tong, Ph.D.)