Clip description Keywords
Desert erosion
Desert erosion

Duration: 01:49

Deserts are eroded by rainwater run-off and the wind. Desert soil is far from useless; it is rich in nitrogen and mineral compounds.

 
Meet the Catlin Arctic Survey team members
Meet the Catlin Arctic Survey team members

Duration: 02:34

A team of polar explorers has travelled to the Arctic in a bid to discover how quickly the sea ice is melting and how long it could be before the Arctic summer becomes ice-free.

 
The freezing winters of Northern Canada
The freezing winters of Northern Canada

Duration: 06:12

Kate Humble visits ice road truckers in Canada to see how lakes get icy enough to drive on well after mid Winter.

 

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