William (Bill) M. Alley, PhD, is an internationally-recognized authority on groundwater and an environmental science writer. He was Chief, Office of Groundwater for the U.S. Geological Survey for almost two decades. Bill currently serves as director of science and technology for the National Ground Water Association. Rosemarie Alley is a freelance writer with extensive writing and public speaking experience. Bill and Rosemarie previously collaborated on Too Hot to Touch: The Problem of High-Level Nuclear Waste (2013), High and Dry: Meeting the Challenges of the World's Growing Dependence on Groundwater (2017), and The War on the EPA: America's Endangered Environmental Protections (2020). The Alley's divide their time between San Diego, California and Longmont, Colorado.