Richard Lindzen, Ph. D. Professor of Earth, Atmospheric, and Planetary Sciences, Emeritus Professor of Physics Massachusetts Institute of Technology William Happer, Ph. D. Emeritus Professor of Physics, Princeton University Steven Koonin, Ph. D. Edward Teller Senior Fellow Hoover Institution, Stanford University April 1, 2026 The Honorable John G. Roberts Chair, Federal Judicial Center Chief… Continue Reading
William Happer Professor of Physics, Emeritus, Princeton University November 3, 2025 U.S. Environmental Protection Agency Docket ID No. EPA-HQ-OAR-2025-0186 1200 Pennsylvania Avenue NE Washington, D.C. Re: Reconsideration of the Greenhouse Gas Reporting Program (GHGRP) (“Proposed Rule”) Dear Administrator Zeldin, Thank you for the opportunity to comment on the Environmental Protection Agency’s (“EPA”) Proposed Rule.[1] The… Continue Reading
9.26.2025
Open Letter to the United Nations Food and Agriculture Organization Concerning Sustainable Livestock Development
August 21, 2025 Bruno Telemans Yewon Sung FAO Headquarters Viale delle Terme di Caracalla 00153 Rome, Italy Dear Bruno Telemans, Yewon Sung, Thank you very much for your letter politely declining our request for a side event at the FAO Global Conference on Sustainable Livestock Transformation. We sent you a proposal for a parallel event,… Continue Reading
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
Dr. D. Weston Allen, MBBS, FRACGP Fellowship of the Royal Australian College of General Practitioners (FRACGP), full-time family physician at Kingscliff on the southern Gold Coast. Dr. Jan Breslow, M.D. Fredrick Henry Leonhardt Professor Rockefeller University; Head Laboratory of Biochemical Genetics and Metabolism; Senior Physician Rockefeller Hospital. Former President of the American Heart Association and… Continue Reading
Richard Lindzen Professor of Earth, Atmospheric, and Planetary Sciences, Emeritus Massachusetts Institute of Technology William Happer Professor of Physics, Emeritus, Princeton University Hon. Christopher Wright Secretary Department of Energy Federal Register :: Notice of Availability: A Critical Review of Impacts of Greenhouse Gas Emissions on the U.S. Climate Docket No. DOE-HQ-2025-0207 Re: Scientific Comment on… 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
Photo: File:Joe Biden reviews his remarks before an event marking the one-year anniversary of the Inflation Reduction Act.jpg Richard Lindzen Professor of Earth, Atmospheric, and Planetary Sciences, Emeritus Massachusetts Institute of Technology William Happer Professor of Physics, Emeritus, Princeton University June 17, 2025 IRA CLIMATE SUBSIDIES SHOULD BE REPEALED BECAUSE PHYSICS DEMONSTRATES TRILLIONS OF DOLLARS… 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
Comment on the 5th National Climate Assessment 3rd Order Draft William Happer, Professor of Physics, Emeritus, Princeton University Richard Lindzen, Alfred P. Sloan Professor of Atmospheric Science Emeritus Massachusetts Institute of Technology CO2 Coalition Gregory Wrightstone, Executive Director Non-profit 501(c)(3) educational foundation January 27, 2023 The 5th National Climate Assessment 3rd Order Draft is Fatally Flawed Science… Continue Reading
Richard Lindzen Professor of Earth, Atmospheric, and Planetary Sciences, Emeritus Massachusetts Institute of Technology William Happer Professor of Physics, Emeritus, Princeton University Gold Standard Science May 25, 2025 The material below concerning how scientific knowledge is determined was drawn from the report Greenhouse Gases and Fossil Fuels Climate Science (4/28/25). II. SCIENTIFIC KNOWLEDGE IS DETERMINED… Continue Reading
Richard Lindzen Professor of Earth, Atmospheric, and Planetary Sciences, Emeritus Massachusetts Institute of Technology William Happer Professor of Physics, Emeritus, Princeton University April 28, 2025 SUMMARY At the outset it is important to understand that carbon dioxide has two relevant properties, as a creator of food and oxygen, and as a greenhouse gas (GHG). As… Continue Reading
Submitted by: Gregory Wrightstone, Executive Director Frits Byron Soepyan, Research and Science Associate CO2 Coalition, Arlington, Virginia October 22, 2024 to the Wyoming Energy Authority We recommend against the expenditure of Wyoming tax revenues to study or implement the removal of carbon dioxide from the atmosphere or from the effluents of power plants and other… Continue Reading
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This expert opinion was filed September 10, 2024 Court of Appeals The Hague The Hague The Netherlands Richard Lindzen Professor of Earth, Atmospheric, and Planetary Sciences, Emeritus Massachusetts Institute of Technology William Happer Professor of Physics, Emeritus Princeton University Steven Koonin University Professor, New York University, Senior Fellow at the Hoover Institute Re: Shell v.… Continue Reading
8.15.2024
Open Letter to National Renewable Energy Laboratory RE: Los Angeles 100% Renewable Energy Study
August 12, 2024 Jaquelin Cochran, PhD Director, Grid Planning and Analysis Center National Renewable Energy Laboratory Re: CO2 Coalition Challenges Climate Basis for LADWP LA100 Dear Dr. Cochran: Good news: There is NO climate crisis in California. This letter regards the Los Angeles 100% Renewable Energy Study (LA100), which is a joint collaboration between the… 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
Paper prepared by Richard Lindzen, William Happer, Steven Koonin and submitted April 16, 2024. Summary provided below and the entire paper can be accessed here: Lindzen-Happer-Koonin-climate-science-4-24-b THERE WILL BE DISASTROUS CONSEQUENCES FOR THE POOR, PEOPLE WORLDWIDE, FUTURE GENERATIONS AND THE WEST IF FOSSIL FUELS, CO2 AND OTHER GHG EMISSIONS ARE REDUCED TO “NET ZERO” CO2… Continue Reading
Statement by Dr. James Enstrom concerning unethical practices of the UCLA Law School 11/6/23 UCLA Law School Unethically Promotes an Anti-Science Climate Emergency By Dr. James Enstrom – PhD in physics, Stanford University Please read my November 2, 2023 email letter to the UCLA Law School Dean Michael Waterstone. It is very important to… 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
Dr. John F. Clauser, recipient of the 2022 Nobel Prize in Physics, has been elected to serve on the board of directors of the CO2 Coalition, Arlington, Virginia. “Dr. Clauser will add tremendously to the intellectual depth of our organization, which already benefits from a membership of more than 120 scientists and researchers representing a… Continue Reading
4.18.2023
Happer, Lindzen, CO2 Coalition Comment on the Department of Energy’s Proposed Gas Stove Standards
The Department of Energy (DOE) is proposing to revise their standards for natural gas stoves. This revision is just one of the 110 other “energy efficiency” actions on other household items including furnaces, water heaters, clothes washers and dryers and lightbulbs that would restrict your ability to freely choose which appliance to purchase and use.… Continue Reading
Happer – Lindzen CAFE Rule Comment February 2, 2026