Overview

Climate change denial is a form of science denial characterized by rejecting, refusing to acknowledge, disputing, or fighting the extensive evidence for anthropogenic (human-caused) global warming that has led to a scientific consensus on climate change. It often involves raising unreasonable doubts about the extent to which climate change is caused by humans, its effects on nature and human society, and understating the costs of adaptation while overstating the costs of mitigation. This phenomenon frequently employs rhetorical tactics to create the appearance of a scientific controversy where none exists, sometimes advancing conspiracy theories that suggest climate science is manipulated for hidden agendas.

Core Claims

• Denial of occurrence or trend: Claims that global warming is not happening, has stopped, or that the data indicating warming is unreliable. Arguments may cherry-pick data from short time periods to assert that global average temperatures are not rising, ignoring long-term trends.
• Denial of human attribution: Acknowledges climate change may be happening but denies that it is primarily caused by human activities, instead attributing it to natural cycles like sunspots or cosmic rays.
• Denial of impact: Asserts that increased warming or carbon dioxide levels will be harmless or even beneficial, rather than detrimental to society.
• Denial of scientific consensus: Argues that there is no scientific consensus on climate change, or that any evidence of such consensus is faked, or that the peer-review process for climate science papers is corrupted.
• Policy denial: Claims that climate mitigation policies are ineffective, too costly, or harmful to the economy, sometimes framing them as a means to undermine capitalism and personal freedoms.

Real-World Impact

Climate change denial significantly undermines efforts to act on or adapt to climate change, exerting a powerful influence on climate politics. It has been linked to delays in policy implementation, such as impeding the ratification of international agreements like the Kyoto Protocol. The spread of climate misinformation and disinformation can create a "false social reality" where the public underestimates the degree of scientific consensus and support for climate policies, hindering informed decision-making. Politically, climate change denial is associated with conservative economic policies and has influenced government administrations, such as the Trump administration, which adopted climate denial as official policy and withdrew the U.S. from the Paris Agreement. This denial can also exacerbate societal disruptions by undermining public trust in science, potentially impacting responses to other science-based recommendations, as seen with links to lower COVID-19 vaccination rates.

Prominent Figures

• Politicians: Individuals such as former U.S. Senator Jim Inhofe, who famously displayed a snowball on the Senate floor to question global warming, and former U.S. President Donald Trump, who has called climate change a "hoax".
• Fossil Fuel Corporations: Companies like ExxonMobil have been identified as leaders in climate change denial, funding organizations and campaigns to dispute global warming and delay regulations. Other key players include Chevron and the American Petroleum Institute.
• Conservative Think Tanks & Organizations: Groups such as the Competitive Enterprise Institute (CEI), The Heartland Institute, the Cato Institute, the Heritage Foundation, and Americans for Prosperity are frequently cited for promoting climate change denial, often with funding from the fossil fuel industry and conservative philanthropists (e.g., Koch brothers).
• Individual Scientists/Commentators: Some individuals, often with ties to industry-funded groups, have been prominent in casting doubt on climate science, including Fred Singer, Fred Seitz, Patrick Michaels, and Myron Ebell.

Origins & Evolution

The conversation around global warming began in academic debates in the late 19th century, with initial scientific skepticism evolving as evidence accumulated. Organized climate change denial, however, emerged more prominently in the late 1980s, coinciding with the commencement of international climate negotiations. The fossil fuel industry, aware of the climatic impact of its products since at least the 1970s, played a primary role in organizing widespread denial campaigns to sow public disinformation, a strategy compared to the tobacco industry's denial of health hazards. These campaigns often involved funding contrarian scientists and free-market think tanks.

Over time, the tactics and arguments of climate change denial have adapted. Initially, there was a strong emphasis on denying the trend of warming itself. As scientific evidence for human contributions grew, the focus shifted to "attribution denial" (claiming natural causes) and "impact denial" (claiming climate change is harmless or beneficial). More recently, while outright denial has lost some mainstream credibility, new forms of misinformation like "climate delay" (delaying solutions) and "climate conspiracy narratives" (alleging hidden agendas behind climate action) have become more prominent. The movement has also strategically shifted to economic and moral arguments to bolster fossil fuel production.

Mainstream Perspective

The theory of climate change denial is overwhelmingly rejected by experts, fact-checkers, and official institutions. The scientific community has reached a strong consensus—between 97% and 100% of climate scientists agree that human activities are the primary cause of global warming. Organizations like the Intergovernmental Panel on Climate Change (IPCC) consistently affirm this consensus.

Mainstream experts view climate change denial as a form of science denial, often employing rhetorical tactics to create a false appearance of debate where there is none. They highlight that denial often relies on logical fallacies, cherry-picking data, promoting "fake experts," and making impossible demands of research. Studies have shown that the underlying science of global warming is straightforward, and observed changes are measurable and evident across economies, ecosystems, and human societies. The organized nature of climate change denial, particularly its funding by industrial and ideological interests, is well-documented and recognized as a significant barrier to climate action.