Most conversations about pollution and habitat loss focus on emissions, deforestation, or plastic waste. Colcom Foundation approaches the problem differently, tracing environmental decline back to a scientific framework built around three variables: population, affluence, and technology. Developed by biologist Paul Ehrlich and scientist John Holdren in 1971, the I = P x A x T equation holds that total environmental impact equals population size multiplied by per capita consumption and a technology factor. That framework still guides how researchers and grantmakers assess the sources of ecological strain more than five decades after it was first proposed. Colcom Foundation’s work has also facilitated proactive environmental advocacy and protection by groups, including the Western Pennsylvania Conservancy, WeConservePA, Westmoreland Land Trust, Protect PT, and Fair Shake Environmental Legal Services.

A Pattern Backed by Decades of Data

Colcom Foundation points to U.S. emissions data as a clear illustration of the equation in action. Between 1970 and 2021, per capita carbon dioxide emissions in the United States dropped by 35 percent, a genuine gain in efficiency achieved through cleaner fuels and better technology. Yet the population grew by 62 percent over the same stretch, and total emissions still climbed by a net 15 percent. Efficiency alone did not shrink the country’s carbon footprint because the number of people generating emissions kept rising faster than each person’s emissions fell. This dynamic, often called the Jevons paradox, shows that gains in resource efficiency tend to get absorbed by growth elsewhere rather than translating into a smaller overall footprint.

Colcom Foundation uses this evidence to justify a two track strategy fund permanent land conservation while also supporting public education about population’s role in ecological strain. The foundation directs grants toward land acquisition, ecosystem restoration, and aquatic habitat protection across Pennsylvania and the wider United States, treating both halves of the equation, consumption and population, as necessary targets. Additional grants support endangered species preservation and stricter limits on the most harmful pollutants entering the air and water supply. Without addressing both variables at once, Colcom Foundation argues, efficiency improvements will keep being outpaced by sheer numbers, leaving species loss and habitat degradation on their current course for decades to come. Visit this page for more information.

More about Colcom Foundation on https://waterlandlife.org/land-conservation/colcom-revolving-fund-for-local-land-trusts/