How many thumbs does an octopus have? None, obviously. Yet it still manages to wield tools, braid delicate strands of eggs, and open a jar in less than a minute. It can also pass an object up and down its arm--upside down. All without lifting a finger, of course. How? It's 1,000+ amazing suckers. I …
Award-winning journalist + editor + author
Katherine Harmon Courage 
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