From the New York Times, I'm Rachel Abrams, and this is the daily on Sunday.

Since the beginning of time, humans have quested for the fountain of youth.

And these days, people are pouring billions and billions of dollars into products and therapies and treatments that are intended to reverse aging.

And now, scientists may have gotten closer than ever before to treatments that could restore our youth.

Today, I talk with my colleague Susan Dominus, who spoke with some of those scientists about their research and where the money that is funding it is coming from.

It's Sunday, May 17th.

Sue Dominois, welcome to The Daily.

Thank you so much for having me. So Sue, you cover the intersection of culture and science, and recently you have been focused on a very particular pursuit by a very particular group of people who are really interested in living longer. So I want to start with something very basic, which is what is longevity science?

So longevity science can be described in a bunch of different ways. I mean, there obviously

are people who are researching peptides and who are selling supplements and who are urging

health interventions. But it's basically the science of how we can live longer and how we can slow

aging. And the research that I have become particularly interested in is something known as

cellular rejuvenation. And just explain what that is. So cellular rejuvenation is basically

this idea that we can take a cell that has aged and make it function like a younger version of itself.

And one of the reasons why we believe this can be made to happen is because of something that happens every single time a baby is born.

And what is that?

Well, let me ask you a question.

Why is a baby born young?

I feel like this is a trick.

I know.

It seems intuitive, but it's actually not.

Because although eggs and sperm are relatively protected from aging,

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