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A team of researchers in the Netherlands set out to decipher the rules of an ancient Roman board game, with an assist from artificial intelligence.

As prediction markets boom, competition is heating up. So traders go the extra mile for a fraction-of-a-second advantage or to sleuth out information nobody else has. It can lead to a huge payday.

NPR's Steve Inskeep talks with John Bolton, a national security advisor in President Trump's first term, about the prospect and risks of pursuing regime change in Iran.

Khamenei, the Islamic Republic's second supreme leader, has been killed. He had held power since 1989, guiding Iran through difficult times — and overseeing the violent suppression of dissent.

Democrat James Talarico beat Rep. Jasmine Crockett in the state primaries overnight while Republicans Sen. John Cornyn and Attorney General Ken Paxton will be heading to a runoff.

Jackie Wiles and Paula Moltzan won bronze, for both a first career Olympic medal. For Shiffrin, the world's top slalom skier, a 4th-place finish was her 7th consecutive Olympic race without a medal.

NPR's Juana Summers speaks with Amby Burfoot, former editor of Runner's World, about his longtime friend Jeff Galloway who pioneered the run/walk method. Jeff Galloway died Feb. 25.

From artificial intelligence to fatalities from music streaming to the effects of immigrants on elderly health care, the Planet Money newsletter rounds up some interesting new economic studies.

Steve Emt and Laura Dwyer fell just short of the podium in the Paralympics' new mixed doubles wheelchair curling event. Emt remains the most decorated Paralympic curler in U.S. history.

Reigning world champion Alysa Liu is Team USA's best shot for an Olympic medal in the figure skating final Thursday night.