Training AI to be really smart poses risks to climate

On TikTok, for instance, AI sorts the posts so that the first ones you see are likely to be those you'd prefer. AI serves up the useful results of every Google search. When you ask Siri to play Taylor Swift, AI turns your speech into a command to start her songs. But before an AI can do any of that, developers must train it. In fact, that training's appetite for energy could soon become a huge problem, researchers now worry.