OpenAI hires former defense secretary Mark Esper to expand military AI efforts

Computer systems that perform tasks that normally require human intelligence, such as understanding language, recognising images or making decisions.

AI is changing work, media and public services, raising questions about jobs, safety and regulation.

A digital currency secured by cryptography and recorded on a blockchain, without a central bank issuing it.

Crypto prices are volatile, and governments are still deciding how to regulate it.