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World ยท How the World Works

Did you know?

An octopus has three hearts.

Two of them pump blood to the gills. The third pumps blood everywhere else โ€” but it actually stops when the octopus swims. That's why octopuses prefer to crawl. Swimming literally breaks their heart.

30 sec read

Talk About It Tonight

If you had three hearts, what would each one be in charge of?

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