Marnie Chesterton

Captain Kelly from Sudan was keen to meet each ethnic group and draw a boundary that reflected their distribution.

Captain Tufnel from the Ugandan side was keen to go on leave.

They didn't get on.

The motley crew trekked most of the route, but personal differences and physical hardship meant the project was abandoned before the team reached the end of the border, which you can still see looks suspiciously like it was completed with a ruler.

I'm Marnie Chasterton from the BBC World Service.

This is Unexpected Elements.

This show is a science-based chat, and joining me for that chat, I have a panel of science journalists from around the world.

Specifically, from Nairobi, Kenya, we have Phyllis Muate.

Welcome, welcome.

Hello, my name is Phyllis Muate.

And from rather further north, hello Tristan Arton in Helsinki, Finland.

Nice to be here with you all.

So this is the show that takes its starting point from an event in the news.

And then we use that as our jumping off point to explore a show's worth of occasionally tenuous related science stories.

And it all starts with that one event from the news.

So without further ado, let's hear it.

The only place on earth to see the full majesty of nature.

You know, there'll be lots of jollof rice and there'll be drinks.

Music, arts, culture, it'll be a whole lot of fun.

Viva Africa!