Scientists have now created machines capable of imitating human intelligence and creativity so well that many people around the world cannot tell the difference. In the 2020s, these supercomputing AI tools became available to Americans through services like Chat GPT and Open AI, which enable consumers to tap into the power of this emerging technology for all kinds of activities. This volume of The Reference Shelf looks at the current era in AI technology and the debate about how this emerging technology is changing, and potentially threatening,many familiar parts of human life.