A logic puzzle with aliens who can only ask yes or no questions reveals how quickly reasoning can become paradoxical.

Get access to Brad Slager's "Riffed From the Headlines," a daily VIP feature where he looks to bring accountability to the ...

The 5-year-old immigrant boy taken into ICE custody alongside his father in Minnesota has an active immigration case and ...

Elon Musk has turned a long-running joke about being an extraterrestrial into a central part of his public persona, even as ...

At Davos, the billionaire said his belief that "it might only be us" in the cosmos drives Tesla, SpaceX, and his vision for ...