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Roger Pielke Jr.

Roger Pielke Jr.

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

Appears in 1 story

Notable Quotes

Projections have come down dramatically, not because of anything to do with the physical science, but because of lower expected future emissions. — Human Progress podcast, May 2026

Stories

Climate scientists drop worst-case warming scenario from new model framework

New Capabilities

Author of recent research on scenario plausibility; podcast guest on Human Progress

The scenario long used as climate change's 'business as usual' no longer counts. In April 2026, the team building the next generation of global climate models removed SSP5-8.5 — the high-emissions track behind most '4-5°C by 2100' headlines — from the CMIP7 framework that will feed the IPCC's seventh assessment report.

Updated 6 days ago