Richard Lindzen Professor of Earth, Atmospheric, and Planetary Sciences, Emeritus Massachusetts Institute of Technology William Happer Professor of Physics, Emeritus, Princeton University September 22, 2025 Re: Reconsideration of 2009 Endangerment Finding and Greenhouse Gas Vehicle Standards; Extension of Comment Period (“Proposed Rule”) U.S. Environmental Protection Agency Docket ID No. EPA-HQ-OAR-2025-0194 1200 Pennsylvania Avenue NE Washington,… Continue Reading
8.26.2025
Lindzen-Happer Statement to National Academies of Sciences, Engineering, and Medicine
Richard Lindzen Professor of Earth, Atmospheric, and Planetary Sciences, Emeritus Massachusetts Institute of Technology William Happer Professor of Physics, Emeritus, Princeton University August 25, 2025 National Academies of Sciences, Engineering, and Medicine Committee on Anthropogenic Greenhouse Gases and US Climate: Evidence and Impacts 500 Fifth Street, NW Washington, DC 20001 Re: The Committee’s Charge to… Continue Reading
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6.13.2025
Physics Demonstrates That Increasing Greenhouse Gases Cannot Cause Dangerous Warming, Extreme Weather or Any Harm
Richard Lindzen Professor of Earth, Atmospheric, and Planetary Sciences, Emeritus Massachusetts Institute of Technology William Happer Professor of Physics, Emeritus, Princeton University PHYSICS DEMONSTRATES THAT INCREASING GREENHOUSE GASES CANNOT CAUSE DANGEROUS WARMING, EXTREME WEATHER OR ANY HARM More Carbon Dioxide Will Create More Food. Driving Greenhouse Gas Emissions to Net Zero and Eliminating Fossil Fuels… Continue Reading
7.15.2024
Two Important Supreme Court Cases Strongly Support the CO2 Coalition’s Supreme Court Strategy
July 14, 2024 Two recent Supreme Court cases validate the CO2 Coalition’s Supreme Court Strategy to file comments that can be used in briefings by those challenging various Net Zero regulations in the Courts of Appeal and then the Supreme Court. Coalition comments were filed by Drs. William Happer (Princeton) and Richard Lindzen (MIT) in… Continue Reading
7.12.2024
Physics Proves Net Zero Carbon Dioxide Will Prevent Very Little Warming but Cause Great Harm
Richard Lindzen Professor of Earth, Atmospheric, and Planetary Sciences, Emeritus Massachusetts Institute of Technology William Happer Professor of Physics, Emeritus, Princeton University Physics Proves Net Zero Carbon Dioxide Will Prevent Very Little Warming but Cause Great Harm July 4, 2024 The United States and countries worldwide are vigorously pursuing regulations and subsidies to reduce carbon… Continue Reading
R. Lindzen, W. Happer, and W. A. van Wijngaarden June 2024 Many people are surprised by how little warming would be averted from adoption of net zero policies. For example, if the United States achieved net zero emissions of carbon dioxide by the year 2050, only a few hundredths of a degree Celsius of warming… Continue Reading
7.21.2023
CO2 Coalition Submits Comment on EPA’s Proposed Power Plant Regulations as Dangerous and Unscientific
Release: Immediate July 21, 2023 Download entire comment here (pdf) ARLINGTON, Va. – A proposed federal rule to regulate carbon dioxide emissions from power plants should not be adopted because it scientifically invalid and would endanger lives by denying people the benefits of fossil fuels and increasing levels of CO2, according to two eminent physicists.… Continue Reading
February 23, 2023 Net Zero Plans Are Dangerous and Unsupported by Science and the Scientific Method Net Zero initiatives of governments and private organizations are scientifically invalid and will lead to worldwide impoverishment and starvation if implemented, according to a paper published by the CO2 Coalition. The 55-page paper details how the objectives of Net… Continue Reading
In 2009, the United States Environmental Protection Agency, under the auspices of the Clean Air Act, falsely determined that carbon dioxide was a pollutant. This is known as the Endangerment Finding and has been used since then to enable EPA to regulate and control CO2 emissions. It is this authority that is being used… Continue Reading
by Richard Lindzen Technical paper 5, The Global Warming Policy Foundation Abstract The one-dimensional picture of the greenhouse effect and the role of carbon dioxide in this mechanism dominates current depictions of climate and global warming. We briefly review this picture. [See attached document.] We then discuss the shortcomings of this approach in dealing with… Continue Reading
8.7.2022
Lindzen, Happer & CO2 Coalition Comment on the CFTC Climate-Related Financial Risk
On August 8, 2022, Richard Lindzen, William Happer and the CO2 Coalition submitted comments to the Commodity Futures Trading Commission on climate-related financial risk. Read the entire comment here: Happer Lindzen CO2C CFTC 8-7-22d Our conclusion states: In our scientific opinion as career scientists, there is no scientific basis for the CFTC inquiry. Real science… Continue Reading
7.25.2022
William Happer, Richard Lindzen and CO2 Coalition comment on the 4th National Climate Assessment
Publication: Scientific paper in response to USGCRP Decadal Strategic Plan 2022-2031 | Authors: William Happer, Richard Lindzen & Gregory Wrightstone | Date: 22 July 2022 Happer-Lindzen-CO2C-USGCRP-NCA-7-22-22(1) I. SUMMARY On May 26, 2022, the United States Global Change Research Program (“USGCRP”) explained it is developing a Decadal Strategic Plan 2022-31 and indicated they are focusing on three scientific… Continue Reading
On Climate Sensitivity by Richard S. Lindzen, Ph.D. with review assistance from Roy W. Spencer, Ph.D. June 2020 Editor’s Note This is a superb paper to kick off the CO2 Coalition’s Climate Issues in Depth Series. The topic lies at the heart of the public policy debate over climate and energy, and the author is… Continue Reading
The purpose of this paper is to explain how the data set that is referred to by policy-makers and the media as the global surface temperature record is actually obtained, and where it fits into the popular narrative associated with climate alarm. ... Continue Reading
Comment and Declaration on the SEC’s Proposed Rule “The Enhancement and Standardization of Climate-Related Disclosures for Investors,” William Happer, Professor of Physics, Emeritus, Princeton University Richard Lindzen, Professor of Earth, Atmospheric, and Planetary Sciences, Emeritus, Massachusetts Institute of Technology June 17, 2022 Comment and Declaration Thank you for the opportunity to comment on the proposed… Continue Reading
Happer – Lindzen CAFE Rule Comment February 2, 2026