Understanding the human body is a team effort. That's where the Yachtel group comes in.

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When it comes to a guide for your gut, count on Yacolt.

This is Scientific Americans' 60 Second Science.

I'm Jason Goldman.

And so what happened is I started cutting open these specimens.

They'd been preserved and sitting in the museum collection for five or six years.

And I just started, took a dribble tool, cut off the shell, opened it up, you know, looked at the stomach contents. And I was shocked to find that

in the 10 animals that I looked at, two of those 10 animals had plastics in their stomach.

Greg Polly's original plan was to compare the diets of western pond turtles native to the creeks of

the UC Davis Arboretum with those of red-eared sliders that have been introduced. But that all

changed when the herpetologist from the Urban Nature Research Center at the Natural History Museum

of Los Angeles County began to look inside the sliders.

And then suddenly I thought, oh man, there's a much bigger story here, which is that they're

ingesting plastics, and we know almost nothing about plastic ingestion in freshwater turtles.

We know it's a huge issue in marine turtles, but no one's looking at this in freshwater turtles.

Plastic ingestion has been reported over and over again in each of the world's seven

types of sea turtles.

But there is another 352 types of turtles, and only five studies have ever concerned

...