1⃣8⃣The IPCC has moved on again to new scenarios (SSPs) and once again they build in heroic assumptions about spontaneous decarbonization (seen below).
Fool me once, fool me twice, fool me three times?
➡️https://t.co/tqCVQAflQF pic.twitter.com/WoIhicGxTh

— Roger Pielke Jr. (@RogerPielkeJr) February 10, 2018
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