Hey there, it's Stephen Dubner from Freakonomics Radio.

I am busting into this People I Mostly Admire episode to tell you that we are doing a live

Freakonomics Radio show in Los Angeles on February 13th, and I hope you'll join us.

Guests will include Ari Emanuel, the CEO of the Sports and Entertainment

Firm Endeavor, the filmmaker R.J. Cutler, and the Freakonomics Radio House band, led by Luis

Guerra. For tickets, go to Freakonomics.com slash live shows. A portion of our ticket sales will go to

Wildfire Relief Efforts. Again, that's Freakonomics.com slash live shows. A portion of our ticket sales will go to wildfire relief efforts.

Again, that's freakonomics.com slash live shows February 13th in LA.

I hope to see you there.

Today's episode is an encore presentation of a conversation I had with primatologist Jane Goodall two years ago. It's a conversation I cherish,

both because she's been a hero of mine since I was a kid, and because talking with her gave me a vision of

how to grow old with grace and style. She was 88 years old when we talked. She's 90 now, still enjoying life,

and still making a difference.

My guest today, Jane Goodall, transformed our understanding of the animal world with her work on

chimpanzees.

That was 60 years ago, but she's still working as hard as ever to spread her message of hope.

Every time I tell her story, I'm actually living it,

and every time I live it, it takes me back to who I am, how I began, and what I want to do, and how lucky have been that my story has led me to the place where I am today.

Welcome to people I mostly admire with Steve Levitt.

Few people have lived a life as remarkable as Jane Goodall's.

Born in an era when women's options were greatly limited, especially in scientific

domains, she defied the odds, not only making remarkable scientific contributions,

...