Hi everybody! Lindsay and I are still at home on parental leave while we care for our new family member.

While we're taking some time off this summer, we wanted to share with you one of our favorite tumble episodes of all time.

We love all science here at tumble, but poop science holds a special place in our hearts, really mostly Lindsay's.

We hope you enjoy this extended cut of the science of poop, where we learn about why poop is not only funny, but important for our health.

Hi, I'm Lindsay.

And I'm Marshall. Welcome to tumble, the show where we explore stories of science discovery.

Today we're talking about something we all make as waste.

It's stinky, it's brown, and it's gross. It's poop!

We're traveling through the human body into space and inside a research clinic to introduce you to the science of poop.

Get ready for a lot of gross out moments.

There's gonna be more than one.

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We recorded this question at UT Girls Day, a festival celebrating STEM at the University of Texas here in Austin.

I'm Elizabeth, I'm 10 years old, my living Texas.

And my science question is, why do humans poop?

What makes you wonder that?

Because I just think it's gross.

...