attribution

The figures are cited with attribution, by UN agencies and widely in the media.

These and other attribution studies are taking on growing importance as California, Hawaii and other states sue oil companies, seeking billions of dollars in damages for effects linked to the burning of fossil fuels.

"That said, it is too early to say to what degree climate change has made these specific fires more extreme. This will need to be evaluated in a more detailed attribution analysis."

It said the attribution of a false headline about Mr Mangione to the BBC showed "generative AI services are still too immature to produce reliable information for the public".

"We collaborate closely with news publishers, including in the display, attribution and links to their content in ChatGPT search, and offer them easy ways to opt out should they so desire."