Two years into his English literature degree at the University of Pittsburgh, sophomore Luke Johnson has noticed something in his liberal arts courses: Students in his classes have gone quiet.

For years, the guiding assumption of artificial intelligence has been simple: an AI is only as good as the data it has seen. Feed it more, train it longer, and it performs better. Feed it less, and it ...

In Raymond Elementary School’s pre-kindergarten classroom, boys and girls huddled together on a rug with their teacher to learn a foundational skill for reading and spelling: how to pull apart and put ...