Tracey Mumford

Original theme by Dan Powell.

Special thanks to Isabella Anderson, Larissa Anderson, Miles McKinley, Liz Davis-Moore, Zoe Murphy, and Paula Schumann.

Now, time for the quiz.

Every week, we ask you a few questions about stories the Times has been covering.

Can you get them all?

First up.

This week, there's been a lot of increased scrutiny on Polymarket, one of the world's largest prediction markets.

On the site, you can bet on all kinds of things you wouldn't typically think you could bet on, like how many times will Elon Musk tweet today?

Or who will be the next president of Vietnam?

All of the controversy now is because there was a surge in big anonymous bets from people wagering that a major world event was just about to happen.

And they were right.

What was it?

The answer?

Over 150 accounts placed bets last Friday correctly predicting an American strike on Iran Saturday.

The 11th hour betting totaled almost a million dollars, with one econ professor who studies prediction markets saying it, quote, makes you think it was someone who knew something about the timing.

It's just the latest instance of people raising concerns about insider trading on prediction markets, which have become a multi-billion dollar industry.

Okay, next question.

The Times has been covering how a device that was huge in the early 2000s has been finding new fans, even though it's been discontinued for years.

If you are of a certain age, that sound might really take you back.

We'll play it again here.