From the UK, the Guardian's weekly science podcast for those who love their inner-geek.

The full series at

Presented by Alok Jha and produced by Andy Duckworth

We speak to Professor Chris Turney on a satellite phone from Antarctica. He's out there monitoring climate change.

Apparently cosmogenic dating is nothing like internet dating. Glad we cleared that one up.

Follow Chris' expedition on Twitter @ProfChrisTurney.

Robin McKie and Nell Boase are in the studio to discuss this year's Edge Question: What scientific concept would improve everybody's cognitive toolkit?

The founder of John Brockman tells us how they dreamed up the idea of picking the brains of the world's leading thinkers, and one of the brains, social media expert Clay Shirky, explains his answer to this year's question.

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