David VanHorn wrote:
>> I wonder...  if you extract energy from the wind, then the wind contains
>> less energy, doesn't blow as hard/far.  What are the unintended
>> consequences of extracting energy from the wind?  Change in weather
>> patterns causing famine?  Is it really a "WONDERFUL" choice or is it
>> just another choice with attendent negative consequences?
>>     
>
>
> Extracting as much energy as a few trees might..
> Out of an airstream that might be a mile high.
> The most a given mill can extract is something like 30% of the available
> energy within it's swept area.
>   
Then can wind power produce enough energy to replace a significant 
amount of energy produced from fossil fuels?

Maybe there's a physical law that says "...for X amount of energy you 
extract from the total Earth ecosystem, you cause Y damage to it no 
matter how you extract the energy (coal, wind, waves...)"???
-- 

*Carey Fisher*

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