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
Latest from The Honest Broker on SubstackSep 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
Sep 1, 2026
A growing climate scandal at the US National Academy of Sciences
Making Sense of Science in Policy and Politics
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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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The Dispatch Press
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Washington Post Press
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Cleaning Up with Michael Liebreich Podcast
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Stossel Podcast
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Live sites tracking real data, updated on an ongoing basis.
Live hurricane and tropical cyclone data, tracked against the historical record.
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Trend analysis across tornadoes, hail, drought, streamflow, wildfire, and more.
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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.
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