Meet your artificial intelligence matchmakers. These A.I. tools are changing dating apps, so users don’t have to swipe through an endless scroll of profiles.

Three of the four people whom the police believe carried out the theft have been arrested. But the jewelry is nowhere to be found.

The justices face a so-called legitimacy dilemma as they deal with a tricky legal dispute and a president who has made clear he would view defeat as a personal insult.

The Vermont senator on how to take the country back from elites — on both sides of the aisle.

France’s trove of DNA profiles has helped solve high-profile crimes and was used to find some of the Louvre suspects, and it is growing. The police can also access other countries’ databases.