The trees are doing something odd out in northern Ontario:

In the forests of northern Ontario, a “strange phenomenon” of large natural rings occurs, where thousands of circles, as large as two kilometers in diameter, appear in the remote landscape.

Via this link: https://www.researchgate.net/figure/Aerial-photograph-of-forest-rings-with-diameters-of-approximately-150-m-in-northern_fig1_292337890, which leads to a very scientific article on the phenomenon.

The article assures us that this is nothing unnatural or particularly mysterious:

Indeed, as geochemist Stew Hamilton suggested in 1998, the rings are most likely to be surface features caused by “reduced chimneys,” or “big centres of negative charge that frequently occur over metal deposits,” where a forest ring is simply “a special case of a reduced chimney.”

Reduced chimneys, meanwhile, are “giant electrochemical cells” in the ground that, as seen through the example of forest rings, can affect the way vegetation grows there.

I’ve been out there and it looked fine to me, but things get even weirder and weirder the more I read – but that just might be the full article going in all kinds of directions, especially at the end. But the tree rings are cool. And maybe it’s aliens…