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When will our population hit crisis point ?

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#61    Frank Merton

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Posted 03 July 2013 - 11:41 PM

That objection is consistently raised -- that in measuring the overall environmental cost of a technology you have to consider the costs involved in manufacturing, distributing, and so on, in addition to the cost of actual operation.  Another element is ultimate disposal when the operations are over.

A lot of hype surrounds various technologies that promise significant improvement over existing technologies but achieve this by ignoring these other elements.  We see that with electric cars, widely touted as more fuel economic than gasoline, but not when you include manufacturing and disposal of those batteries.  A similar phenomenon what encountered by the Obama administration pouring money into a solar energy research company that ended up with good and efficient solar cells that were prohibitively expensive.

What this all shows is that often those who think there is some conspiracy or other venal activity going on to prevent wonderful-sounding technologies from coming to market in a major way are just looking at a narrow aspect of the cost and not all the costs.

#62    Br Cornelius

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  • Stupid Monkeys.

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Posted 04 July 2013 - 07:24 AM

Life cycle analysis is tricky as it greatly depends on the starting variables which are subject to choice. Vary the choices very slightly and you can arrive at completely different conclusions with the electric car been a prime example. Always look at who did the analysis when assessing the conclusions of any claim as to whether a product is better than another similar product.

Very few people who comission these studies have no horse in the race so they should be viewed with extreme caution. However in the case of the water treatment device under discussion - there is clearly no overall advantage otherwise they would already have been comercialized on an industrial desalination basis.

Br Cornelius

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#63    MonkeyLove


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Posted 03 August 2013 - 12:03 PM

In terms of ave. ecological footprint vs. biocapacity:


we are at overshoot.

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