Suicides. Self harm. Depression and anxiety. The toll of a social media-addicted, phone-based childhood has never been more stark. It can be easy for teens, parents and schools to feel like they’re trapped by it all. But in this conversation with Tristan Harris, author and social psychologist...

Beneath the race to train and release more powerful AI models lies another race: a race by companies and nation-states to secure the hardware to make sure they win AI supremacy.