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March 5, 2025
Climate Misinformation from the United Nations
I was speaking to a non-US non-climate beat reporter yesterday about undeniable issues of scientific integrity in climate science and he asked a question about the climate science community that got my attention: “And no one cares? Aren’t scientists supposed to care about such things?” Lapses of scientific integrity in climate science have become normalized….
March 3, 2025
Thinking About Tanks
Speaking yesterday on Fox News, U.S. Secretary of Commerce Howard Lutnick indicated that official data for U.S. GDP would now separate out government spending from the rest of the nation’s overall economic tally. “You know that governments historically have messed with GDP. They count government spending as part of GDP. So I’m going to separate those two…
February 27, 2025
Is the EPA “Endangerment Finding” Endangered?
Earlier today, The Washington Post reported that head of the Environmental Protection Agency (EPA), Lee Zeldin, has urged the Trump administration to rescind the EPA’s 2009 “endangerment finding” on greenhouse gases. The Post reports: Environmental Protection Agency Administrator Lee Zeldin has privately urged the White House to strike down a scientific finding underpinning much of the federal government’s push to combat…
February 24, 2025
Why We Do the Research
One of the wonderful things about science is that research results cannot be consistently anticipated. That’s why we do the research. That research doesn’t always come out how we expect is particularly problematic for partisans who expect research to provide results in alignment with their political commitments. So you think hurricane landfalls have become more…
February 18, 2025
The Dilemmas of Democracy
In his classic 1960 book, The Semisovereign People, political scientist E.E. Schattschneider identified a dilemma of democracy: All of us are ignorant about most things, making each of us unsuitable to govern — yet we also have a belief that everyone should be allowed to participate in governance, with our political leaders chosen from among the…
February 12, 2025
The North American Fire Deficit
An important new paper published this week in Nature Communications looks at the historical record of fire in North America — A fire deficit persists across diverse North American forests despite recent increases in area burned. Parks et al. find that large fires of recent decades in North America are not unprecedented: Our study of 1851 tree-ring fire-scar…
February 10, 2025
Hits and Misses
The term “scenario” was introduced by a group of researchers at the RAND Corporation in the 1960s. Herman Kahn explained its origin in 1979: “We deliberately chose the word [scenario] to deglamorize the concept . . . There is no a priori concept that a scenario should be taken seriously or that it is intended to reflect aspects…
February 3, 2025
IPCC at the Crossroads
Long-time readers of THB will know well that I am strongly supportive of formal scientific assessments — a form of science arbitration, as defined in my book which gives this site its name. Scientific assessments are essential for understanding what relevant experts collectively think they know, what they think they don’t, along with surfacing uncertainties, disagreements, and…
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…