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slash UK slash AI for people. Welcome to Scientific American Science Talk posted on June 25th,

2019. I'm Steve Merski.

On this episode, we can define it in relatively basic scientific terms.

That is a combination of collagen, which is the flexible part, and hydroxyapatite,

which is the hard mineral part, and you put those together and you get something that's

both strong and flexible.

But that's not really satisfying.

That doesn't really get at, I think, the meaning and the poetry and the expression of bone.

That's Brian Sweetek.

He describes himself as a fossil fanatic and as a, quote, collection of 206 some odd bones and associated soft tissues.

End quote.

He writes the scientific American paleontology blog Laylaps.

That's the mythological dog who always caught what he was chasing.

And he's the author of the new book, Skeleton Keys, The Secret Life of Bone.

He recently visited Scientific American, where we talked about the book.

I had an experience a few years ago that was really eye-opening.

I had to have some dental work done.

...