Hello, smarty listeners. Please take a moment and leave us a five-star Apple rating review.

It not only helps us grow the show, but we might also read your review on Who Smarted.

So do it now. And don't forget, you can listen to Who Smarted anywhere, including Apple podcasts,

Spotify, and Amazon Music, including hands-free listening powered by Alexa on all Apple, Android,

and Echo devices. Hey, smarty pants, listen up. Take a close look at your finger. Any finger,

even your thumb. Careful, don't poke yourself in the eye. So, what do you notice at the end of

your finger? Dirt, pizza sauce, a booger, more specifically, what do you see at the end of your

finger? That's right, your fingernail. Take a good look at it. Chances are, you don't give your

fingernails too much thought. Sure, some of you might paint them, chew them, or tap them on the table.

And yes, some of you, stick them in your nose. But chances are, you take your fingernails and

toenails for granted. But did you know they're actually very important parts of your body?

In fact, they make humans unique. While many furry mammals have claws, primates, such as humans,

apes, monkeys, and orangutans, have nails. And your fingernails are very useful, like when you

have an etch. But there are also some really odd things about your fingernails you might not know.

For instance, did you know your fingernails are made of dead tissue?

Hmm. Did you know your fingernails have no nerves in them? Which is why you don't scream when you clip

them? At the same time, your fingernail makes your finger more sensitive to the things you touch.

Huh? Did you know your nails can reveal things happening inside of you?

Whoa.

If you want to know what else your nails are good for, besides scratching, tapping, picking, chewing on,

and painting, then get ready for another whiff of science on.

Who smarted? Who smarted? Who smart is it you? Is it me? Is it science? Or history? Listen up!

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