1/7 Sound recordist Chris Watson captures the dramatic sounds of Iceland's dynamic landscape.
Chris Packham presents the grey heron.
Chris Sperring goes to Dorset to see how one butterfly in particular survives the winter.
Chris Packham presents the great spotted woodpecker.
Adam Rutherford asks architects and engineers how to protect homes against floods.
Helen Mark hears why Dorset was used as a laboratory by the arts group Common Ground.
Chris Packham presents the avocet.
The power of numbers in global politics, plus gay rights and religion in Belfast.
Chris Packham presents the mallard.
4/4 Every day we complete a myriad of tiny negotiations, only noticing when they go wrong.
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