In 2023 and 2024, global temperatures reached a new high. The World Meteorological Organization declared 2024 the hottest year on record as extreme heatwaves, devastating floods, and ferocious wildfires continued to sweep across the globe. The surge prompted some scientists and journalists to suggest that the planet’s warming was not explicable.
Michael Mann, University of Pennsylvania Presidential Distinguished Professor of Earth & Environmental Science set out to test whether the surge in temperatures really defied explanation.