1. The Emerald Band

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. 17 June 2012. 60 min

The amazing web of life centred on the Brazil nut tree is revealed.

2. The Secret of the Savannah

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. 24 June 2012. 60 min

Chris Packham reveals how the world's spectacular grasslands flourish.

3. The Magical Forest

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. 1 July 2012. 60 min

Chris Packham looks at the annual miracle of the temperate forest.

4. Waterworlds

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. 8 July 2012. 60 min

Chris Packham travels across the world to reveal the secrets of our watery habitats.