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There's a vile sickness in Abbas town.

You must excise it.

Dig into the deep earth and cut it out.

From IHeart podcasts and Grimm and Mild from Aaron Manky,

this is Havoc Town. A new fiction podcast set in the Bridgewater Audio Universe, starring Jules State and Ray Wise.

Listen to Havoc Town on the IHeart Radio app, Apple Podcasts, or wherever you get your podcasts.

Hey, welcome to Stuff to Blow Your Mind.

My name is Robert Lamb.

And I'm Joe McCormick, and it's Saturday.

We are bringing you an episode from The Vault.

This one originally published on June 30th, 2022, and it's part two of our series, The Lesser of Two Crab Claws,

about asymmetry in the Natural World. Enjoy.

Welcome to Stuff to Blow Your Mind, a production of IHeart Radio.

Hey, welcome to Stuff to Blow Your Mind. My name is Robert Lamb.

And I'm Joe McCormick, and we're back with part two of our series on asymmetry in life.

Now, in the last episode, we talked about the concept of bilateral symmetry, where basically all of the higher animals have body plans where the left and the right sides are more or less a copy of one

another. In other words, along one of the three dimensions of space, our bodies are approximately

mirrored, at least on the outside. Now, in most organisms, there are

minor variations on this type of symmetry, but occasionally there are species with isolated but

radical deviations where like one feature on the outside of an otherwise mirror-flipped half of the body is drastically different from what you find on the other side.

Examples that came up last time were the tusk of the narwhal, where in most cases it's actually the left maxillary canine tooth.

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