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babsbunny Donating Member (1000+ posts) Send PM | Profile | Ignore Mon Nov-02-09 07:11 PM
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Logging 'caused Nazca collapse'
http://news.bbc.co.uk/earth/hi/earth_news/newsid_8334000/8334257.stm

By Jody Bourton
Earth News reporter

The ancient Nazca people of Peru are famous for the lines they drew in the desert depicting strange animal forms.

A further mystery is what happened to this once great civilisation, which suddenly vanished 1,500 years ago.

Now a team of archaeologists have found the demise of the Nazca society was linked in part to the fate of a tree.

Analysing plant remains they reveal how the destruction of forests containing the huarango tree crossed a tipping point, causing ecological collapse.
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SoCalDem Donating Member (1000+ posts) Send PM | Profile | Ignore Mon Nov-02-09 07:13 PM
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1. Tree roots hold soil together..no mystery there
humans always manage to muck things up..but nature wins in the end
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