TIL that in 2023, scientists discovered that Earth's inner core is slowing down and reversing its rotation relative to the surface.

https://www.cnn.com/2024/07/05/science/earth-inner-core-rotation-slowdown-cycle-scn/index.html
#til #todayilearned
https://www.reddit.com/r/todayilearned/comments/1fzb7k3/til_that_in_2023_scientists_discovered_that/