The first Liberty Fund colloquium that I attended occurred in 1986. Held in Montana, the reading for the event was a single book, Playing God in Yellowstone: The Destruction of America’s First National Park, by philosopher Alston Chase.
His argument was that the National Park Service (NPS), in cahoots with the budding environmentalist movement, had already wrecked America’s Yellowstone treasure. The guiding principle here had come from the 1963 Leopold Report, which urged the NPS to manage the parks so that they would be “nearly as possible in the condition that prevailed when the area was first visited by the white man. A national park should represent a vignette of primitive America.”
When placed atop the earlier priority given to supplying a good visitor’s experience, the results were disastrous. For example, Yellowstone now has far fewer beavers due to depleted vegetation. This was a consequence of too many elk. Their numbers had exploded because the NPS had killed off the wolves, mountain lions, and a hefty share of the coyotes that had kept the elk population down. Bear feed lots and bison fenced in along the roads—popular in the 1950s—were shut down. Starving bears began to attack the human visitors, and so on.
Alston showed how the environmentalists’ faith in the invisible hand of nature actually rested on two massive errors. First, Yellowstone was not a closed ecosystem, but rather part of a vastly larger physical and biological landscape. This made it impossible to manage flora and fauna only within the strict boundaries of this, or any, park. And second, human alterations of plant and animal life within the future park had actually been happening for over ten thousand years, ever since the first human visitors had arrived after crossing the land bridge from Asia. The “pre-white man” measure of “primitive America” or wilderness had no real historical or measurable coherence.
Also present at that 1986 Liberty Fund colloquium were several persons from the relatively new Political Economy Research Center. They were advancing a fresh and compelling paradigm for the conservation of valued ecosystems based on honest science, property rights, market incentives, and common sense. Since then, I have been on the mailing list for PERC Reports. By a modest coincidence, the Summer 2025 issue features articles on “Building a Brighter Future for National Parks,” including Kat Dwyer’s “Surviving the Popularity of Yellowstone.” Her PERCish proposal for reducing the Park’s $1.5 billion “deferred maintenance hole”? Slap a $100 surcharge on international visitors.
Human-induced climate change has a long and diverse pedigree.
The PERC model came to mind when reading Steve F. Hayward’s “A New Environmentalism?” There is much in this essay that I admire. His review of the early enthusiasm for a radical environmentalism shown by conservative voices such as Ronald Reagan and National Review, and the hostility toward the first Earth Day exhibited by the progressive left, is both hilarious and sobering. His argument that the anti-human bias of modern Malthusians, such as Paul Ehrlich, later led the left to embrace Ecology is convincing. This ideology found environmental worries to be a useful tool for expanding the regulatory state. Hayward correctly skewers the “peak oil” hypothesis advanced several decades back for vastly underestimating oil and natural gas reserves. He properly laments the demise of common law remedies to environmental pollution, such as nuisance statutes and riparian rights. His suggestions for repairing this damage, such as bringing back old-fashioned common law liability, are especially strong. Hayward correctly indicts the Endangered Species Act for encouraging private owners of wildlife habitat to “shoot, shovel, and shut up” whenever a rare creature enters their property. And his call for privately funded monetary prizes for specified innovations in environmental and energy policy is a most welcome idea.
All the same, I offer two cautions regarding his analysis.
First, while I share his enthusiasm for potential ecological gains from a strengthening of property rights, the models that he offers may favor the concentration of land and resources in ever fewer hands. For example, while he commendably argues that “the commons should be privatized to the fullest extent possible,” he also praises the “Ecomodernists” who endorse “large-scale agriculture” and “resource extraction” on a mega-capital scale. The human model here seems to be billionaires, each owning several million acres of Montana or Wyoming land, and corporations employing technologically advanced machines in place of human labor. I much prefer strategies and incentives that would enhance land and resource ownership by “smallholders” of “the middling sort.” Given the opportunity and the proper incentives, they too can be good stewards of the environment. This was the republican model favored by the nation’s Founders, and one still relevant to our time.
Second, Hayward frequently denounces “the climate change fanatics”—or alternately “the climate hysterics”—and their “monomaniacal climate fixation.” He never identifies who these people are, however, nor why their arguments are wrong and hysterical. Recent research in and on science may help clarify matters here.
To begin with, most commentaries on human-driven climate change—or the “global anthropogenic transformation of terrestrial nature”—focus solely on the industrial era, beginning in the early nineteenth century. However, as the title of a recent article in The Proceedings of the National Academy of Sciences (and foreshadowed by Alston Chase) puts it, “People Have Shaped Most of Terrestrial Nature for at least 12,000 Years.” Major events included the deforestation of Western Europe beginning in Roman times and the introduction of rice cultivation in China 5,000 years ago. The essay provides a multitude of other examples, mostly performed by the oft-sainted indigenous or traditional peoples. As the authors of the paper conclude: “Depicting human use of nature largely as a recent and negative disturbance of an otherwise human-free natural world is not only incorrect but has profound [and disturbing] implications for both science and policy.”
Put another way, human-induced climate change has a long and diverse pedigree. What about global warming caused by the burning of fossil fuels? Where can someone find honest and unbiased science on this? The answer may be surprising: turn to the oil industry itself.
A 2018 article in Nature Climate Change describes early research funded or encouraged by the American Petroleum Institute (API). For example, a 1954 project reported an increase in global CO2 concentration of 10 percent since 1854. Four percent of this was due to the combustion of fossil fuels, with the remainder due to deforestation and other land use changes. In 1965, API President Frank Ikard reported to his membership “that carbon dioxide is being added to the earth’s atmosphere by the burning of coal, oil, and natural gas at such a rate that by the year 2000 the heat balance will be so modified as possibly to cause marked changes in climate beyond local or even national effects.”
More remarkably, a 2023 article in the journal Science examined 32 in-house documents written by Exxon (later ExxonMobil) scientists between 1977 and 2000 and another 72 peer-reviewed scientific publications also authored or co-authored by the oil company’s employees between 1982 and 2014. The result? “We find that most of their projections accurately forecast warming that is consistent with subsequent observations.” Moreover, ExxonMobil scientists “correctly rejected the prospect of a coming ice age, accurately predicted when human-caused global warming would first be detected, and reasonably estimated the ‘carbon budget’ for holding warming below 2 [degrees Celsius].”
It is true that ExxonMobil’s public relations strategy, as laid out in a 1988 internal memo, was to “emphasize the uncertainty in scientific conclusions regarding the potential enhanced greenhouse effects.” Of course, this is exactly what one would expect from a corporation that derived its income and profits from the drilling, refining, and sale of fossil fuels. The surprise is that the scientists whom the company hired, paid, and trusted concluded otherwise. Their science is far from hysterical and may perhaps be as close as we can ever get to fair and accurate analysis.
In short, the activities of human beings can change the climate and have done so for thousands of years. Humans in the past, however, were always unaware of (and probably quite unconcerned about) the possible climate-altering consequences of their actions. A new reality emerged in the late twentieth century when, for the first time, scientists arguably identified a specific cause of human-induced climate change before it had reached its consummation. And, for the first time again, humans therefore gained the collective opportunity to alter or mitigate the process.
With that said, specific strategies of mitigation—e.g., ban the burning of coal, favor electric vehicles, reboot the nuclear power plants, tax the CO2 discharges of factories—may or may not be worth the economic, social, and/or political costs. The option of doing nothing also remains, so letting the consequences fall where they might (while perhaps investing in prime beachfront property on Greenland’s sunny coast). In every case, though, choices must be made, even if by default. To borrow a phrase, that is The Big New Thing.
