Who made these rings?

This takes me back to the days when rings would mysteriously appear in  corn fields. This in turn would lead to talk about aliens or other life forms as the source of who made the rings. I seem to recall that they usually just ended up as some sort of prank by humans.

Anyway, in this story, the rings about 492 million year old and probably weren’t made by humans.  The article is entitled “What on Earth Made These Perfect Fossil Rings?” by Jennifer Frazer over at the Artful Amoeba blog courtesy of the Scientific American website.

Check it out, there’s even a contest to come up with the “best natural explanation”.

Woo Hoo!

 

Green Librarian

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