Aisha Roscoe

U.S.

and Israeli forces launched combat operations yesterday.

President Trump announced the airstrikes were targeting regime change in the country.

We'll bring you much more tomorrow morning on Up First.

And you can also hear the latest coverage on our national security podcast, Sources and Methods with Mayor Louise Kelly, or in the NPR app.

I'm Aisha Roscoe, and this is the Sunday Story from Up First, where we go beyond the news of the day to bring you one big story.

The recent Super Bowl was awash with betting, and while most people were betting on the game, TikTok user atcadenbooth had other plans.

When the TikTok influencer showed up outside the stadium to time the rehearsal, he expected lots of people to be there doing the same thing.

Booth used the information he got from timing the rehearsal to place a bet on the length of the national anthem performance, and he won.

These kind of niche bets are growing in popularity, especially on apps known as prediction markets, and the bets being placed on these apps go far beyond sports.

People can bet on things like who will be the 2028 Republican presidential nominee, the weather in a number of cities, or even how long a government shutdown will last.

NPR correspondent Bobby Allen has been covering this new way to place bets, and he joins me now.

Hey, Bobby.

Okay, so, you know, look, I've never placed a bet on these sites.

I really don't like losing money.

Like, you know what I'm saying?

Unless I'm getting something in return.

But I know the two most popular sites are Kaoshi and Polymarket.

And I've downloaded Kaoshi.

Can you walk me through how it works?