Welcome! I'm a philosophy professor at Colorado State University in Fort Collins, Colorado. My scholarly work centers on environmental ethics, with particular interests in preserving wild nature, ending population growth and reducing excessive consumption. I'm the author of How Many Is Too Many? The Progressive Argument for Reducing Immigration into the United States and Thoreau's Living Ethics: Walden and the Pursuit of Virtue and co-editor of the anthology Life on the Brink: Environmentalists Confront Overpopulation. I am an affiliated faculty member of CSU’s School of Global Environmental Sustainability and immediate past president of the International Society for Environmental Ethics. I live in Fort Collins with my wife Kris and sons Henry and Tom.

* Good news! This past fall Swedish ecologist Frank Gotmark and I were awarded a $600,000 grant to study the environmental effects of overpopulation and the best means to reduce future population growth, globally and nationally. The two-year project is funded by the Global Challenges Foundation. Stay tuned for future research results.

* When How Many Is Too Many? first came out I did dozens of interviews promoting the book. But recently I visited Maria Stadtmueller on her podcast The Big Chew and it was far and away the best discussion I’ve had on immigration and environmental issues in a public forum. Check it out!