13/01/2026
Why They Left: 16 Former UN Climate Scientists Question the IPCC's Direction
These are the concerns of the first 16 of 46 scientists who have left the UN's main climate science panel, the Intergovernmental Panel on Climate Change (IPCC). They say the organization’s work has become biased and politicized, straying from objective science.
1. Dr. Robert Balling: "The full IPCC report admits there's no clear proof that sea levels rose faster during the 1900s. But that important fact was left out of the shorter report written for politicians and the public."
2. Dr. Lucka Bogataj: "Historical ice core data shows that temperature changes first, and carbon dioxide levels in the air follow about 700 years later. This challenges the idea that CO2 is always the main cause of warming."
3. Dr. John Christy: "Most people don't know this, but many scientists working with the IPCC don't agree that human-caused global warming is happening. Their reports keep getting twisted to fit a political story."
4. Dr. Rosa Compagnucci: "Human activity may have only added a small amount to Earth's warming. Changes in the sun's energy play a much bigger role in climate change."
5. Dr. Richard Courtney: "The actual scientific data strongly suggests that the theory of human-caused global warming is incorrect."
6. Dr. Judith Curry: "I won't automatically support the IPCC's conclusions because I don't trust how they gather and present their information."
7. Dr. Robert Davis: "The planet hasn't warmed as much as the top climate computer models said it would. Surprisingly, the key summary for leaders completely ignores temperature data from satellites."
8. Dr. Willem de Lange: "Back in 1996, the IPCC listed me as a scientist who agreed humans affect climate. I never agreed with that. There is no proof that human activity is causing dangerous, runaway climate change."
9. Dr. Chris de Freitas: "Leaders should know that the basic idea that CO2 drives climate is being seriously questioned, so maybe we don't need hugely expensive policies to cut emissions. The loud 'climate emergency' message often relies on scare stories and unreliable computer models."
10. Dr. Oliver Frauenfeld: "We still have a long way to go in truly understanding the climate and being able to predict it with our models."
11. Dr. Peter Dietze: "The IPCC used a flawed calculation and severely underestimated how much CO2 the oceans will absorb in the future, which makes their projections look worse than they are."
12. Dr. John Everett: "Let's be realistic. In the past, oceans have been both much warmer and much colder than what current climate predictions warn about. After reviewing the science, I don't believe ocean acidification will be a major problem."
13. Dr. Eigil Friis-Christensen: "The IPCC deliberately ignored studying the sun's influence on climate. They only focused on looking for human causes from the start."
14. Dr. Lee Gerhard: "I was unsure about human-caused warming until the big media push in the late 1980s. I decided to research it myself from the ground up. My own research convinced me the claims were false."
15. Dr. Indur Goklany: "Climate change is not likely to be this century's worst environmental problem. If you look at the data on weather-related deaths, there is no sign that extreme weather has become more frequent or severe, even though more people live in risky areas."
16. Dr. Vincent Gray: "The IPCC's main climate message is a carefully crafted list of falsehoods."
In summary: These scientists left the UN's IPCC because they believe it ignores contrary evidence, relies on unreliable models, downplays natural causes like the sun, and presents a one-sided, overly alarming view that isn't supported by all the data. They feel the process is more about politics than pure science.
