Before this BBC podcast kicks off, I'd like to tell you about some others you might enjoy.

My name's Will Wilkin and I Commission Music Podcast for the BBC.

It's a really cool job, but every day we get to tell the incredible stories behind songs,

moments and movements, stories of struggle and success, rises and falls, the funny, the ridiculous.

And the BBC's position, at the heart of British music

means we can tell those stories like no one else.

We were, are and always will be right there at the centre of the narrative.

So whether you want an insightful take on music right now

or a nostalgic deep dive into some of the most famous and infamous moments in music,

check out the music podcasts on BBC Sounds.

Hello and welcome to more or less on the BBC World Service. We're the programme that throws

a life raft into the sea of numbers all around us. And I'm Tim Harford. This week on the

programme, a documentary which has been making lots of waves, sea spiracy.

We hear a lot about blood diamonds. This is blood shrimp.

We are at war with the oceans. And if we win this war, we're going to lose it all because

mankind is not able to live on this planet with the Dead Sea.

It is described on Netflix as documenting the harm that humans do to marine life.

It's the kind of consciousness-raising program that will have you swearing off fish finger sandwiches for the rest of your life.

But don't take my word for it. I haven't seen it. I'm a radio man myself.

Our intrepid reporter, Matt Murphy, has watched it so that the rest of us don't have to.

Hello, Matt, what's the story? Hi, Tim. So yes, C-spiracy has sparked a lot of debate recently,

but there has been some controversy over some of the claims the documentary makers make and the numbers behind them.

...