Social media firms face thousands of lawsuits, the BBC looks at four which could be significant.

The boss of X, Tesla and SpaceX, already the world’s richest person, is now also its first trillionaire.

The BBC breaks down how the tech mogul’s fortune has grown.

Andrew Rogers explores new tech trials helping people stay underwater for longer.

Adrienne Murray explores how new 3D imaging is supporting heart procedures.

Shiona McCallum meets a medical expert testing out the future of prosthetics.

Shiona McCallum visits Fifa HQ in Zurich to see new tech being used in the World Cup.

We talk to an expert about the risks from AI hackers

What is the role of a teacher once AI arrives in the school classroom?

The tech company announces its new Majorana 2 chip.