MAN [over radio]: Wait, wait. You're listening... [laughs]

- WOMAN [over radio]: Okay? - MAN: All right.

- WOMAN: Okay? - MAN: All right. [clears throa]

- WOMAN: You're listening... - MAN: Listening...

WOMAN [echoing]: ...to Radiolab.

- MAN 2: Radiolab. - WOMAN: From...

- MAN: WNYC. - WOMAN 2 [echoing]: C.

- WOMAN: C? - MAN: Yup. - [woman 2 giggles]

WOMAN: And NPR.

JAD ABUMRAD: I've learned... How would you describe this on?

ROBERT KRULWICH: My sense is that you walk into a wild plac.

Then you hear the wind and the trees,

and you hear these chirps and sounds and calls,

and they're just part of the... they're part of the wild.

They're wildlife, but there's now a group of scientists

- who listen much more closely - [muffled chatter]

and who are reducing wildlife to wild talk.

- It's-it's, uh... - ABUMRAD: Yeah.

KRULWICH: There are words in there.

ABUMRAD: When you find the words, as the people we will meet do