Roger Pielke Jr.

Roger Pielke Jr.

Making sense of science, policy, and politics.

Senior Fellow, American Enterprise Institute · Professor Emeritus, University of Colorado Boulder

About Roger

What’s New at THB — Updated Sep 30, 2026

New THB Build your own climate scenario

Latest from The Honest Broker on Substack

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Sep 29, 2026

Trump’s Carbon Tax

The president meets the “Iron Law”

Sep 23, 2026

Fool Us Once

A Trojan Horse effort to place RCP8.5 back at the center of climate science and policy

Sep 22, 2026

The Economic Costs of the Iran War: THB Sept Update

How much Americans are paying for the war in fuel, taxes, and interest

Active Data Projects

Five public dashboards, each with its own data sources and its own update schedule.

Latest Site Updates

New pages, new features and corrections across THB and its dashboards over the past week, apart from the routine daily data updates.

The Honest Broker

  • Sep 29Paid index New paid-only posts added every week, and a new page for Roger’s books, at the paid-subscriber index.
  • Sep 27New archive Read Roger’s Forbes columns, charts included, from the Archives menu.
  • Sep 25New feature Search every THB post by word or topic, from the new box under the latest posts.

US Extreme Weather

  • Sep 24New link The winter storms page now links to Ryan Maue’s map of every cyclone on Earth and how deep each one got — a measure of storm strength, where the page’s snowfall index covers impact only.
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