Phil Cafaro, a CSU philosophy professor and author of How Many is Too Many: The Progressive Argument for Reducing Immigration into the United States, will be hosting several book signings this month at bookstores along the Front Range.

Cafaro, a self-described liberal, makes the case in his new book that the current level of immigration isn’t consistent with progressive ideals. Cafaro argues that population growth leads to sprawling development, greater crowding, more pollution, increased greenhouse-gas emissions, and less room on the planet for other species.

In the book, published by the University of Chicago Press, he also provides evidence that flooding labor markets with immigrants drives down workers’ wages, undermines unionization efforts, and increases economic inequality.

The book has a Colorado focus — it features dozens of interviews with residents of the Centennial State: workers and employers, immigrants and natives, and environmentalists from across the state.

Cafaro will host book signings in Denver, Fort Collins and Boulder:

• Wednesday, Sept. 9, 7 p.m at Tattered Cover LoDo in Denver, 1628 16th Street.

• Saturday, Sept. 12, 1 p.m. at Barnes and Noble in Fort Collins, 4045 S. College Avenue.

• Saturday, Sept. 26,  11 a.m. at Barnes and Noble in Boulder, 2999 Pearl Street.

Cafaro is a fellow with the School of Global Environmental Sustainability at CSU and president of the International Society for Environmental Ethics. His writing and research focus on environmental ethics, consumption and population issues, including his first book, Thoreau’s Living Ethics: Walden and the Pursuit of Virtue.