Welcome to Our Research Archive
Search and filter by content type, issue area, author, and keyword
March 20, 2025
Is Single Extreme Event Attribution Even Possible?
The U.S. National Academy of Sciences, Engineering, and Medicine (NASEM) currently has a study committee on Attribution of Extreme Weather and Climate Events and their Impacts. In this series — Weather Attribution Alchemy — I have previously discussed the committee’s many conflicts of interest. Today I discuss a crucial scientific question at the center of the committee’s work,…
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…
March 11, 2025
Welcome to the Era of Energy Realism
Every year for the past 15 years, JP Morgan publishes an outstanding annual energy report by Michael Cembalest. Last week JP Morgan published its 2025 edition and today I share five important figures from the many in the report, which I highly recommend. Cembalest’s top line: [A]fter $9 trillion globally over the last decade spent on wind, solar,…
January 27, 2025
The Most Major Hurricanes Ever
Last year the world experienced the most major hurricane landfalls since records are available, tying only 2015, with 11 storms. Does last year indicate that we have reached a new climate-fueled normal? Let’s have a look. More than a decade ago, Jessica Weinkle, Ryan Maue, and I published the first long-period global hurricane landfall dataset using a consistent methodology….
January 21, 2025
California’s Insurance Crisis
Dave Jones, California’s insurance commissioner from 2011 to 2018, explained California’s growing insurance crisis in 2023: Due to the failure to substantially reduce greenhouse-gas emissions in the U.S. and globally, we are marching steadily to an uninsurable future. Jones sentiment is widely shared — Climate change is causing more and more intense extreme events, which are…
January 15, 2025
Goodbye and Good Riddance to Meta Fact-Checking
The decision last week by Meta, the parent company of Facebook, Instagram, and Threads, to immediately stop using “fact checkers” — groups hired by Meta to determine what information is true and what is false, and thuswhat should be removed — represents not just a return to common sense but also good news for both science and…
January 9, 2025
Meta’s Content Moderation Turnabout
Today, Meta, the parent company of Facebook, announced that it would immediately stop using “fact checkers” to police the content on its platforms, which also include Instagram and Threads. Meta explained: “In recent years we’ve developed increasingly complex systems to manage content across our platforms, partly in response to societal and political pressure to moderate content….
November 25, 2024
Politicization of the American University
Roger Federer spent 24 years as a professional tennis player. Roger Clemens played 24 years in the major leagues. And at the end of next month, I’ll leave my position as tenured, full professor the University of Colorado Boulder after 24 years on the faculty.1 Roger that! Leaving the faculty has motivated me to try to make sense of the…
November 19, 2024
Energy Realism and Climate Pragmatism at the Department of Energy
He’s a climate denier! That is the standard reaction of many in the climate lobby when encountering views on climate and energy deviating from the monomaniacal view that climate is the world’s single-most important issue. Reactions from climate advocates to the nomination of Chris Wright,1 CEO of Liberty Energy, to serve in Donald Trump’s cabinet as Secretary…