Cheryl Katz is a San Francisco Bay Area-based science and environmental writer and former newspaper reporter. She grew up on the banks of the Mississippi River in northern Minnesota to the haunting and beautiful call of loons. In the Arctic, she saw immense cliffs covered with nesting kittiwakes and guillemots and was struck by the determination and endurance of Arctic terns, which travel from pole to pole. Near the Antarctic peninsula, she observed the terns fishing from ice floes. After spending a week with scientists studying Iceland’s seabird colonies, she grew to appreciate another of their skills: Divebombing intruders. Fortunately, she returned unscathed.