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Welcome to TechLife on the BBC World Service, the programme about technology and how it affects our lives. I'm Chris Valence. This week, the program is all about AI from top to toe.

We learn how artificial intelligence can pick out the words we're typing from just our brainwaves.

Stepping into the future will AI and 3D printing revolutionise the shoe business

and the solar tech solution, keeping fish fresh in Kenya.

Well, let's begin with the brain.

Inside our heads is an incredible computer.

It's arguably the most complicated thing in the universe, as far as we know.

Powered by, well, whatever you had for lunch, it can still do things.

The biggest supercomputers simply can't. But increasingly, artificial intelligence is helping us probe the brain's secrets,

including the way language works.

Now researchers working for Facebook's owner, Meta,

have managed to analyse the brains of volunteers as they type words and sentences.

They used AI to figure out which keys had been pressed

just by detecting the electrical activity in their brains

without the need for surgery.

...