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May 7, 2025
Surprise! Ice is Rebounding at BOTH Poles — Climate is More Complex Than We Know
When it comes to climate change, to invoke one of Al Gore’s favorite sayings, the biggest challenge is not what we don’t know, but what we know for sure but just isn’t so. Two new studies show that the Earth’s climate is far more complex than often acknowledged, reminding us of the importance of pragmatic…
April 29, 2025
Constructing Climate Catastrophism
Today kicks off a new series here at THB — Making Sense of Climate Scenarios. I have three motivations for this series: This series is an exercise in transparency, with a goal to open up discussion about what sorts of scenarios should sit at the center of climate science and policy. Sometime in the coming weeks…
April 21, 2025
Trump Comes for Climate Research
Last week Politico published a scoop related to climate research under the Trump Administration: The Trump administration is canceling funding for the U.S. Global Change Research Program, the entity that produces the federal government’s signature climate change study, according to three federal officials familiar with the move. The move, which had been widely expected, is a potentially fatal…
April 15, 2025
Censorship is Anti-American
On March 25, Rumeysa Ozturk, a graduate student at Tufts University — “a Fulbright scholar working on a PhD in child study and human development on an F-1 student visa” — was detained by six plain clothes government officials as she walked down a Boston street. Yesterday, The Washington Post reported that a State Department memo, prepared…
April 10, 2025
The Apocalypse Machine Rolls On
Climate scenarios are fundamental to climate research and policy. For more than a decade, one scenario dominated research informing discussions of climate among scientists and decision makers. Called RCP8.5, today that scenario is widely recognized as implausible, leading to apocalyptic portrayals of future climate change and providing an unreliable basis for policy analyses for adaptation and…
April 7, 2025
Behind the Curtain
Last month, climate scientist Kate Marvel, of NASA, shared “something I have really struggled with” about extreme event attribution. She was speaking as an invited expert in a public information-gathering session of the U.S. National Academy committee1 on extreme event attribution. Marvel, who also served at the lead author on the chapter on “Climate Trends” in the 2023 U.S. National…
March 31, 2025
“Drill, Baby, Drill” is Nothing Short of a Myth and Populist Rallying Cry
Who uttered the quote that is the title of this post? A prominent climate activist, perhaps? Or maybe, a progressive Democratic member of Congress? No and no. The quote comes from a representative of a Texas-based oil and gas production firm last week to the Federal Reserve Bank of Dallas in its March Energy Survey. Here…
March 27, 2025
Global Energy Demand Set to Accelerate
The International Energy Agency has just published its Global Energy Review 2025. In this post I share the five most important take-aways I see in the report. I encourage you to have a look at the full report for IEA’s interpretation of its top conclusions. Let’s jump right in . . . Have a look at the figure…
March 12, 2025
“In Bad Faith”
The DC Court that heard the defaation case brought by climate scientist Michael Mann against two bloggers has ruled today that Mann and his lawyers acted in “bad faith” during the case, by presenting false claims on multiple occasions related to Mann’s grant funding: Here, the Court finds, by clear and convincing evidence, that Dr. Mann, through…
March 12, 2025
How To Get Rid of a Tenured Professor
I was a tenured full professor at the University of Colorado Boulder for almost 24 years. At the end of 2024, I left. Officially, it was a voluntary departure. But I sure felt like I’d been pushed out. My story started in 2015, when Rep. Raúl Grijalva (D–Ariz.) asked the university to investigate me. He alleged that…