This is an IHeart podcast.

When news broke earlier this year that baby KJ, a newborn in Philadelphia,

had successfully received the world's first personalized gene editing treatment,

it represented a milestone for both researchers and patients.

But there's a gripping tale of discovery behind this accomplishment and its creators.

I'm Evan Ratliff, and together with biographer Walter Isaacson,

we're delving into the story of Nobel Prize winner Jennifer Dowdna,

the woman who's helped change the trajectory of humanity.

Listen to Aunt CRISPR, the story of Jennifer Dowdna with Walter Isaacson

on the IHeart Radio app, Apple Podcasts, or wherever you get your podcasts.

Welcome to Stuff You Should Know, a production of IHeart Radio.

Hey, and welcome to the podcast.

I'm Josh, and there's Chuck, and we're just goose-stepping to Jerry's orders like usual here on stuff you should know.

No, no, no.

Thank you. I'm glad you cleared that up for the new listeners who are like,

oh, these guys are Nazis? I hadn't realized.

No, this is, I really enjoyed studying this one because I, as you know, am not the biggest student of war.

So I never, like, sat around and watched the history channel,

and this one is very much a history channel type of episode.

So I feel like I have a much better understanding of the lead up to World War II.

And also, it's amazing how much this reflects modern times and what's going on with Russia and

Ukraine. For real, for real. I kept going like, oh, oh, oh. Yeah. I mean, there's a very clear line

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