For decades, Eliezer Yudkowsky has been trying to warn the world about the dangers of AI. And now people are finally listening to him. But is it too late?

Two stories about the way AI could – in fact, already is – making the world better. In Montana, when Lee Johnson discovered his wife, Yokie, had cancer, he turned to AI – and was surprised by the answers he got. Meanwhile, in Massachusetts Prof Regina Barzilay’s experience with cancer has led her...