If the artificial intelligence bubble were to burst, every company would be affected, the head of Google's parent firm Alphabet has told the BBC.
Sundar Pichai said, while the growth of AI investment had been an "extraordinary moment", there was some "irrationality" in the current AI boom. Is a bubble burst inevitable and would it be painful?
Also in the programme: the US hails UN security council backing for its Gaza peace plan; and does the world -- or the world's restaurants -- need a universal spice index?
(Photo shows Sundar Pichai during an interview at Google's California headquarters on 17 November 2025. Credit: BBC News)
