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Global Swarming

David Attenborough narrates a programme investigating the extraordinary natural phenomenon of swarming, from birds to mosquitoes, jellyfish to locusts. Some are beautiful to behold, such as the gathering of millions of Monarch butterflies in central Mexico - but some have terrifying consequences, especially the ones caused by man.

30 minutes

Last on

Sat 29 Sep 2007 15:50
BBC Two except East, Yorkshire
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