Why Climate Models Are Changing Course

Why Climate Models Are Changing Course

From Sanity Check by Cornwall Alliance for the Stewardship of Creation

May 17, 2026 · 13 min

About this episode

David R. Legates discusses the shift in climate modeling and the abandonment of extreme climate scenarios.

For years, the most extreme climate scenarios shaped headlines, policy debates, and public fear—despite growing evidence that many of those projections were increasingly detached from real-world energy and emissions trends. Now, in a major shift ahead of the IPCC’s Seventh Assessment Report, climate modelers are quietly abandoning some of their most dramatic assumptions. In this episode of Sanity Check, David R. Legates breaks down the rise and fall of RCP8.5 and SSP5-8.5, the “worst-ca...

People in this episode

Guest: David R. Legates

Topics covered

  • climate models
  • RCP8.5
  • SSP5-8.5
  • climate scenarios
  • energy trends
  • emissions trends

Keywords

  • climate models
  • RCP8.5
  • SSP5-8.5
  • climate scenarios
  • emissions
  • energy trends
  • IPCC

Mentioned in this episode

Organizations: IPCC, Cornwall Alliance for the Stewardship of Creation

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