Blogs & Opinion Pieces

I am an occasional blogger and op-ed writer for various sites and publications. Here are some examples.


Population in the IPCC’s new mitigation report. April 12, 2022.

Is Limiting Population Growth Key to Climate Change? December 16, 2021.

Glasgow follies. October 26, 2021.

Two radical ideas whose time has come. May 3, 2021.

IUCN recognizes the importance of attending to population to preserve biodiversity. March 16, 2021.


Rights and responsibilities in population policy. January 12, 2021.

Human rights and population policies. December 8, 2020.

Earth overshoot day and population. Overpopulation Research Project, August 20, 2020.

Climate refugees or overpopulation escapees? Overpopulation Research Project, August 3, 2020.

We need a federal tax on the mega-wealthy. Fort Collins Coloradoan, August 11, 2020.


A lesson from the COVID-19 pandemic on the perils of density. School of Global Environmental Studies, April 24, 2020.

Is overpopulation a dirty word? Overpopulation Research Project, February 12, 2020.

Initiative #107 Is a Great Opportunity for Colorado. Rocky Mountain Collegian, January 26, 2020.

Know the Numbers! TOP unveils new interactive population projections for the European Union. Overpopulation Research Project, December 10, 2019.

Empty skies, empty words. Overpopulation Research Project, September 24, 2019.


Overpopulation threatens the world’s food supply, United Nations warns. Overpopulation Research Project, August 15, 2019.

How should environmentalists think about immigration? Overpopulation Research Project, July 10, 2019.

A Simple Point (that makes a big difference over time). Overpopulation Research Project, May 31, 2019.

The implicit population hypothesis hidden within EU Green party platforms. Overpopulation Research Project, April 17, 2019.

Two more reasons we love Australia. Overpopulation Research Project, April 3, 2019.


Immigration ethics for a world of limits. Overpopulation Research Project, September 11, 2018.

One Child: Do we have a right to more? Overpopulation Research Project, May 2, 2018.

Starting a dialogue on immigration, population growth and the environment. Overpopulation Research Project, March 29, 2018.

The liberal case for reducing immigration. Richard Lamm and Phil Cafaro, Denver Post, February 16, 2018.

While everyone focuses on sex scandals, the rich get richer. Denver Post, November 24, 2017.


If We Want a Whole Earth, Nature Needs Half. Oryx, April 27, 2017.

Should progressives support reducing immigration into the U.S.? Aeon Conversations, June 18, 2015.

The 1 percent’s immigration con: How big business adds to income inequality, pits workers against each other. Salon.com, March 1, 2015.

Vote for Sale. (focus on important political issues) Fort Collins Coloradoan, August, 2012.

Get Real on Economic Inequality. Fort Collins Coloradoan, November, 2011.


A Better, Not a Bigger, Economy, New York Times, October 16, 2011.

Wishful Thinking from the Center for American Progress. Center for Immigration Studies, October 16, 2010.

Brits and Aussies Speak Out on Immigration, Population, and Ecological Sustainability. Center for Immigration Studies, June 17, 2010.

Oil Spills and Immigration Policy. Center for Immigration Studies, June 16, 2010.

Is There a General Right to Immigrate to the U.S.? Center for Immigration Studies, June 10, 2010.


Progressives Debate Arizona's New Immigration Law. Center for Immigration Studies, April 28, 2010.

Health Care for All. Denver Post, March 19, 2009.

Get Real on Poverty. Fort Collins Coloradoan, September, 2007.

Here Today .... (protect the Poudre River) Fort Collins Coloradoan, February, 2007.

Family Values." (increase the minimum wage) Fort Collins Coloradoan, August, 2006.


Earth Day's Missing Issue. Fort Collins Coloradoan, April, 2006.

"God or Mammon. Fort Collins Coloradoan, May, 2005.

"A Modest Proposal for Immigration Reform. Fort Collins Coloradoan, December, 2005.

"Martin Luther King: American Hero. Rocky Mountain Bullhorn, January, 2005.

"Martin Luther King: Prophet of Peace. Rocky Mountain Bullhorn, January, 2005.