This was an impregnable fortress. The only way you get out was in a wooden box.

The controversial maximum security prison impossible to escape from.

And one of the duties of a political prisoner is the escape.

The IRA inmates who found a way. of a political prisoner is the escape.

The IRA inmates who found a way.

I'm Carlo Gableer and I'll be navigating a path

through the disturbing inside story of the biggest jailbreak in British and Irish history.

The narrative that they want is that this is a big achievement by them.

Escape from the maze, listen first on BBC Sounds.

BBC Sounds. BBC Sounds, Music Radio Podcasts.

Hello, I'm Ben Carter and welcome to Seriously from BBC Radio 4. I'm the producer of The Scramble for Rare Earths.

In this five-part series, Meisha Glenny finds out why the battle for a small group of metals and critical raw materials

is central to rising geopolitical tensions around the world.

In this fourth episode, we ask whether the EU can end its dependency on China to fuel the transition to green technology.

Number 63 on the periodic table is no conferring.

Europium. It's the most reactive of the rare earth metals and that gives it a particularly fantastic array of applications.

Depending on what you mix it with, it can produce blue colors or deep red colors or even white.

And so in the old cathode ray tube television sets from the mid to late 20th century,

you had to have European in order to produce the red, green, and blue from which all the rest of the images were derived.

Dr Julie Klinger is author of Rare Earth Frontiers from terrestrial subsoils to lunar landscapes.

If you can detect the signature of Europium from starlight,

that can be used to classify stars and also help us understand how or where a particular star was born.

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