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
THB on Substack
Taking Us for FoolsHow a turnkey method attributes any trend to climate change
THB on Substack
Plausible Scenarios Still Indicate 2°C to 3°CAn update of Pielke et al. 2022 with four more years of emissions data, 2025…
Tropical Cyclones
Season to date59 named storms, 562.3 ACE — +7% vs the 1980–present average, #42 of 47 years.
US Extreme Weather
Drought33.8% of the CONUS in severe-or-worse drought — 136th of 1,394 weeks since 2000.
Global Extreme Weather
Drought25.1% of global land in severe-or-worse drought — 10th of 569 months since 1979.
Decarbonization
South KoreaCO₂ intensity of GDP down 2.2%/yr since 2000 — 0.530 to 0.305 kg per $.
Blog Archives
Caster Semenya ruling: sports federation is flouting ethics rulesI have a Worldview column in Nature on the flouting of research and medical…
Substack Archive
"An Egregious Failure of Scientific Integrity"The first independent evaluation of NOAA's "billion dollar disasters"
Publications
The neglected heart of science policy: reconciling supply of and demand for scienceArgues science-policy scholarship has focused heavily on the supply side of research…
In the News
The true story of the 'Great Miami Hurricane' echoes 100 years laterUSA Today — The storm killed hundreds of people, causing widespread…
Latest from The Honest Broker on SubstackSep 17, 2026
How a turnkey method attributes any trend to climate change
Sep 14, 2026
An update of Pielke et al. 2022 with four more years of emissions data, 2025 IEA outlook, IPCC AR6 database, and the new CMIP7…
Sep 9, 2026
Build a bespoke climate scenario, project future temperatures, and compare with CMIP7
Making Sense of Science in Policy and Politics
Buy on Amazon →
What Scientists and Politicians Won't Tell You About Global Warming
Buy on Amazon →
Disasters and Climate Change (2nd ed.)
Buy on Amazon →
The War Against Cheating and Corruption in the Cutthroat World of Elite Sports
Buy on Amazon →
The Free Press Press
Sep 2026
America Out Loud News Press
Sep 2026
Cleaning Up with Michael Liebreich Podcast
Jun 2026
Stossel Podcast
May 2026
Five public dashboards, each with its own data sources and its own update schedule.
Live hurricane and tropical cyclone data, tracked against the historical record.
View here →
Trend analysis across tornadoes, hail, drought, streamflow, wildfire, and more.
Visit site →
The same hazards as the US dashboard, worldwide.
Visit site →CO₂ intensity of GDP and per-capita emissions by country, with a calculator for the rate any target needs.
Visit site →Set eight assumptions and build an emissions scenario, against the record and the seven CMIP7 marker scenarios.
Visit site →New pages, new measures and corrections across the dashboards over the past week, apart from the routine daily data updates.
Read THB on Substack →
