How today’s global warming is unlike the last 2,000 years of climate shifts

https://www.sciencenews.org/article/global-warming-today-unlike-last-2000-years-climate-shifts

"Previous cooldowns and warm-ups were regional, driven by natural forces, paleoclimate data show

Temperatures across 98 percent of Earth’s surface were hotter at the end of the 20th century than at any time in the previous 2,000 years.

Such nearly universal warming, occurring in lockstep across the planet, is unique to this current era, scientists say. By contrast, other well-known cold and warm snaps of the past, such as the Little Ice Age or the Medieval Warm Period, were, in fact, regional rather than worldwide."