Re: JUNGLE PATROL

>>Right, for a 'normal' planet. There might also be searches for changes
to
>>athmosperic chemistry unlikely to belong to natural causes.
>
>Like vulcanism, swamp out gassing, animal flatulence, etc. A primitive 
>society will have a hard time making any significant mark over a short 
>period of time on a planet's ecosphere.

This is partly true. The impact of stone age life on the atmosphere is 
nothing compared to the impact of 'life' in general, which tends to keep
an 
atmosphere out of chemical equilibrium. It's only with the onset of 
industrialisation that the atmosphere will show any major changes.

However, nomadic movements may wreck havoc on animal life (mass
extinction 
as primitive peoples headed South from the Alaskan Land Bridge,
anyone?), 
but that is way out of the topic now.... ;-)

John S. 

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