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Have you ever really thought about the hair that grows out of your head? I mean, I'm sure you've thought about your hair in terms of which way to get it cut

and how to get that one really wonky piece to behave itself for once.

But have you ever considered why it is the way it is?

For Scientific American Science quickly, I'm Rachel Feltman.

My guest today is biological anthropologist

Tina Lissisi, an assistant professor at the University of Michigan. She leads a lab that studies the

quote, evolution and genetic basis of human phenotypic variation with a focus on pigmentation and hair.

In other words, she's figuring out why human skin and hair comes in so many gorgeous

varieties. Thanks so much for joining us to chat today. Great to be here. So I've been a fan of

your research for a few years now because, among other things, you're really asking and answering

questions about hair that I don't think anyone else is tackling.

How did you get interested in your field of study?

And would you tell our listeners a little bit about it?

Absolutely.

So I got interested in this when I was an undergrad.

I did my undergrad at the University of Cambridge where I was studying

archaeology and anthropology, which there consists of studying archaeology, biological anthropology,

...