Roger Pielke Jr.
Making sense of science, policy, and politics.
Senior Fellow, American Enterprise Institute · 
Professor Emeritus, University of Colorado Boulder
Making sense of science, policy, and politics.
Senior Fellow, American Enterprise Institute · Professor Emeritus, University of Colorado Boulder
New THB Build your own climate scenario
Latest from The Honest Broker on SubstackSep 9, 2026
Build a bespoke climate scenario, project future temperatures, and compare with CMIP7
Sep 7, 2026
Good news and bad news from a close look at the new CMIP7 scenarios
Sep 6, 2026
What I’ve learned as I have developed AI expertise
Making Sense of Science in Policy and Politics
Buy on Amazon →
What Scientists and Politicians Won't Tell You About Global Warming
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Disasters and Climate Change (2nd ed.)
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The War Against Cheating and Corruption in the Cutthroat World of Elite Sports
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America Out Loud News Press
Sep 2026
The Dispatch Press
Aug 2026
Cleaning Up with Michael Liebreich Podcast
Jun 2026
Stossel Podcast
May 2026
Live sites tracking real data, updated on an ongoing basis.
Live hurricane and tropical cyclone data, tracked against the historical record.
View here →
Live
Trend analysis across tornadoes, hail, drought, streamflow, wildfire, and more.
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Live
A worldwide expansion of the US Extreme Weather and Climate Change Dashboard, tracking the same hazards globally.
Visit site → LiveCO₂ intensity of GDP and per-capita emissions by country, plus a calculator for the rates a given target requires.
Visit site → LiveSet eight assumptions and build an emissions scenario, against the record and the seven CMIP7 marker scenarios.
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Read THB on Substack →
