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This is a deep fake, hyper-realistic video and audio recordings that use artificial intelligence to create fake content.

The U.S. government has become increasingly concerned about the use of deep fakes. It poses a major threat to the United States.

We wanted to know more about how they worked, so we asked one of the best in the business

to train the technology on us.

This is how I looked 30 years ago.

Remember the stories of migrant children being purposefully separated from their parents at the U.S. border in 2018?

Well, three years later, at least 1,000 kids still haven't been returned to their parents.

It is shocking. And really what happened was that there was no system in place for documenting separations.

So there's nowhere to go to find out who was separated or not. It really is case-by-case detective work.

Deep Springs College is an oasis of green, set amid a no-man's land of sagebrush and endless sky.

Putting like philosophy and love into two orders.

Here, students from around the world labor in the classroom and on the grounds.

Where there is no football field, but there is an alfalfa field.

And the syllabus includes philosophy, calculus, and pre-dawn cow milking.

I'm Leslie Stahl.

I'm Bill Whitaker.

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