Singapore’s wealth fund is in talks to invest millions in a Cambridge start-up using artificial intelligence (AI) to help wipe out “forever chemicals” harmful to human health.

Quizzed if AI would potentially cause job displacement, Mr Altman shrugged it off, saying it was a cyclical process.

Stephen Condon left his high-paying marketing job. He wanted a more meaningful career. At 61, he became an EMT. Condon sought ...