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 his 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 edge.org 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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Meet our crack team of science bloggers:
The Lay Scientist by Martin Robbins
Life and Physics by Jon Butterworth
Punctuated Equilibrium by GrrlScientist
Political Science by Evan Harris
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