FRAGMENT FROM NATURE contemplates plant-pollinator interactions for this and next weekend. The emergence of green plants on Earth changed the world by providing an abundant food source, a habitat, and an ecosystem for nested hierarchies of diverse creatures. Key amongst these were the pollinators that co-evolved with plants, and permitted their complex reproductive cycles. This complex mutualistic co-evolution of flowering plants and pollinators has been pieced together over time and tells the story of how evolution is more about cooperation than competition.