Jessica Cantlon had a grant with the U.S. Navy to explore whether people could improve spatial problem-solving skills through training. Then the program was cut.

“If the net result is that all the teens in Australia are still using social media, even after they’re technically banned from doing it, why are we doing any of this?”

What we learned from the government’s biggest attempt yet to control who can gain access to the most powerful new A.I. models.