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Big tech is going nuclear in a small way.

From American public media, this is Marketplace Tech.

I'm Novosafo.

Some AI companies are turning to nuclear power to meet demand for electricity,

but traditional

nuclear plants can take decades to bring online, so some tech companies are partnering with

startups trying to build small modular nuclear reactors designed with speed in mind.

One such company, Kairos, has a deal with Google to build a fleet of modular reactors.

To do so, Chiros is relying on a technique first developed in the mid-20th century called

molten salt cooling. Journalist Mark Harris wrote about Chirose for MIT Technology Review.

So almost all the nuclear power stations in the US and around the world use water to do cooling, right?

There's lots of water.

We have lots of water in the world.

It's very easy.

The problem is you have to use quite high pressure water generally.

And operating at such a high pressure means that if that escapes, it can be quite

risky because you're dealing with quite a large difference in pressure between the inside

and the outside. With what Chyrus wants to use, which is a molten salt, and it's basically

...