For the past week, I’ve found myself playing the same 23-second CNN clip on repeat. I’ve watched it in bed, during my commute to work, at the office, midway through making carrot soup, and while brushing my teeth. In the video, Harry Enten, the network’s chief data analyst, stares into the camera and breathlessly tells his audience about the gambling odds that Donald Trump will buy any of Greenland. “The people who are putting their money where their mouth is—they are absolutely taking this seriously,” Enten says. He taps the giant touch screen behind him and pulls up a made-for-TV graphic: Based on how people were betting online at the time, there was a 36 percent chance that the president would annex Greenland. “Whoa, way up there!” Enten yells, slapping his hands together. “My goodness gracious!” The ticker at the bottom of the screen speeds through other odds: Will Gavin Newsom win the next presidential election? 19 percent chance. Will Viktor Orbán be out as the leader of Hungary before the end of the year? 48 percent chance.

These odds were pulled from Kalshi, which hilariously claims not to be a gambling platform: It’s a “prediction market.” People go to sites such as Kalshi and Polymarket—another big prediction market—in order to put money down on a given news event. Nobody would bet on something that they didn’t believe would happen, the thinking goes, and so the markets are meant to forecast the likelihood of a given outcome.

Prediction markets let you wager on basically anything. Will Elon Musk father another baby by June 30? Will Jesus return this year? Will Israel strike Gaza tomorrow? Will the longevity guru Bryan Johnson’s next functional sperm count be greater than “20.0 M/ejac”? These sites have recently boomed in popularity—particularly among terminally online young men who trade meme stocks and siphon from their 401(k)s to buy up bitcoin. But now prediction markets are creeping into the mainstream. CNN announced a deal with Kalshi last month to integrate the site’s data into its broadcasts, which has led to betting odds showing up in segments about Democrats possibly retaking the House, credit-card interest rates, and Federal Reserve Chair Jerome Powell. At least twice in the past two weeks, Enten has told viewers about the value of data from people who are “putting their money where their mouth is.”