Huge investment is going into data centres for AI, but why are they so expensive?

With batteries still too heavy, start-up plane makers are exploring hybrid options for new aircraft.

The popularity of ChatGPT has raised questions about the future of traditional Google searches.

Google's AI overviews are diverting traffic away from online newspapers and other publications.

Start-up firms have pilot plants for making steel with low carbon emissions, but can they scale up?

Companies are using AI to do basic coding tasks instead of hiring junior staff.