I’ve been looking at the work of Dr. Michael E. Mann and his team on the "hockey stick" reconstructions — but not the ones you’re thinking of. There’s a lesser-known study from 2018 by Dr. Jerry M. B. Meehl and colleagues that models the Earth's temperature over the past 11,000 years using multiple proxies. The conclusion? The last 1,000 years have been the warmest in that timeframe, with a clear upward trend. The long-term trend isn’t downward — it’s more nuanced, with cooling phases and warming phases, but the overall trajectory has been upward, especially in the last few centuries. [Link](https://www.pnas.org/doi/10.1073/pnas.1802475115)