Colcom Foundation funds public education on how U.S. population growth intersects with immigration trends and long term environmental planning. The organization points to Pew Research Center projections indicating that immigration will account for 82 percent of U.S. population growth between 2005 and 2050, a trajectory it argues carries real consequences for habitat protection and climate policy.
The reasoning rests on decades of national data. Between 1970 and 2020, the U.S. population climbed 62 percent, from 205 million to 332 million people. Colcom Foundation notes that this growth occurred even as per capita carbon emissions fell by 35 percent, a gain in efficiency that still could not prevent total national emissions from rising 15 percent over the same period.
Land Conversion Data
Research funded in part through channels the organization supports, including Kolankiewicz et al.’s 2022 study “From Sea to Sprawling Sea: Quantifying the Loss of Open Space in America,” found that more than 31,000 square miles of U.S. land were converted to human made structures and surfaces between 2000 and 2020. Areas with faster population growth, the study found, experienced higher rates of habitat loss than areas with stable or shrinking populations.
A Debated Connection
Colcom Foundation maintains that a larger population makes it harder to meet climate targets, protect native species, and shrink the nation’s overall ecological footprint, and that citizens have a right to weigh these tradeoffs openly. Not every researcher frames the issue the same way. Many point instead to per capita consumption among high income households as the dominant factor in America’s environmental footprint, arguing that population figures alone tell an incomplete story. The Colcom Foundation presents its full reasoning, including the demographic data behind it, through its public “Our Story” materials for readers to weigh directly. Whether one agrees with its conclusions or not, the underlying census and emissions figure it cites are drawn from established federal and research sources, giving readers a factual starting point for forming their own view on the tradeoffs involved. See related link for more information.
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