Hi Curios, I'm Dara Brien.

And I'm Hannah Frye.

And we are back for another series of curious cases.

Where we investigate the scientific mysteries sent in by you.

I would like to know if anything in the universe is truly invisible.

Why do we lie?

What happens to our brains when we fall in love?

We tackle the mysteries of the universe to audacious

experiments and expert insight. Curious cases. Listen first on BBC Sounds. BBC Sounds, music, radio,

podcasts. You're about to listen to the latest series of life-changing.

Episodes will be released weekly wherever you get your podcasts, but if you're in the UK,

you can listen to the latest episodes first on BBC Sounds.

Hello, today our story starts fairly traditionally with a couple who fall in love and who want to start a family,

but who know it won't be easy. And it isn't until that ordinary miracle happens. Many parents say having a child is life-changing, but for Paul Mason, the birth of his, transformed absolutely everything

and not in the way you'd expect. He's here now.

Hello, Paul. Hello. How are you? I'm very well, thank you. Good. Nice to see you. This is a story of childbirth,

but before that, tell me a bit about yourself and how you came to meet your future wife, Isabel.

Well, I went to University of Abbaswyth and I did a PhD in geography.

And it was my dream job was to work for Ordnance Survey.

And so after a period of working as a scientist, I became a business consultant at Ordnance Survey.

And it's there that I met Isabel.

She'd been working all sorts of places for Microsoft and had joined the IT department, and I was in the products department.

...