The Honest Broker

The Honest Broker

🚨RCP8.5 is Officially Dead
The most significant development in climate research in decades
 • Roger Pielke Jr.
Climate Science is About to Make a Huge Mistake
It is déjà vu all over again
 • Roger Pielke Jr.
What Did We Expect Would Happen?
THB Insider #20 - My Oslo talk on how science became so political in the United States
 • Roger Pielke Jr.
Another Pillar of Climate Advocacy Collapses
The 2004 "stabilization wedges" paper wrongly told the world that we had all the technology we needed to solve climate change. We just learned it was…
 • Roger Pielke Jr.
The Global Population Crisis that Never Was
Apocalyptic visions of over-population have always been grounded more in politics than science
 • Roger Pielke Jr.
The Retreat Continues
Updated again, lower again. CMIP7's highest emissions scenario now has less than half the CO₂ of RCP8.5.
 • Roger Pielke Jr.
"In Bad Faith"
A DC court sanctions climate scientist Michael Mann and his lawyers for misconduct “extraordinary in its scope, extent, and intent.”
 • Roger Pielke Jr.
How Climate Science Lost Its Way on Scenarios
A summary of our 2021 deep dive on what went wrong
 • Roger Pielke Jr.
Europe's Deadly Aversion to Air Conditioning
Tens of thousands die in European summers for want of a technology the rest of the rich world takes for granted
 • Roger Pielke Jr.
Three Hard Truths About France's Wildfires
Worse fire weather, less fire on the ground, and mitigation benefits detectable only in models
 • Roger Pielke Jr.
The Last Gasp of the Climate Thought Police
Climate cancelling had a good run -- but my Cornell lecture showed its finally over
 • Roger Pielke Jr.
Energy Transition: Yes, No, Maybe?
THB figures and tables from the 2026 EI Statistical Review of World Energy
 • Roger Pielke Jr.
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