On Radio 4, the more you listen, the more you see.

Hello, I'm Brian Cox.

And I'm Robin Ince, and this is The Infinite Monkey Cage.

In this series, we're going to have a planet off.

I feel like Jupiter wins.

And after all of that, we're just going to chill out a bit.

We're talking about your bog standard.

Ice, not the fancy one.

Science with funny bits.

The new series of The Infinite Monkey Cage.

Listen on Radio 4 and BBC Sounds.

This is TechTent on the BBC World Service with Shona McCallum.

This week we're looking at WhatsApp. Why is the green messaging

app used by so many people around the world? And where can it go next? I've been speaking to the boss

of the app. You know, the core idea here is we want to make it as easy to pay a business or actually

in Indian Brazil send money to a friend as it is to send them a message. We just think that's a huge, has huge possibilities for economic opportunity

if it's as easy to send a business of payment as it is to chat with them.

Also coming up, TikTok responds to the ramping demands for it to be banned in some countries

and the challenge of AI generated art and copyright.

I'm sitting in the lobby of one of Meta's London offices,

and to be honest, if you didn't know, there's nothing shouting Meta from anywhere.

It's fairly low-key with just one small logo saying Met meta on a big television screen just to my left,

...