[geeks] Global Warming questions...

[Sandwich Maker]

" From: Shannon Hendrix <shannon at widomaker.com>
" 
" On Dec 4, 2007, at 11:54 PM, wa2egp at att.net wrote:
" 
" >> Electric cars are another example.  They are not zero emissions, they
" >> just change where the tailpipe is.
" >>
" >> The best way to reduce pollution is to increase efficiency, often by
" >> simply turning them off when not needed... :)
" >
" > Actually electric cars produce more pollutions due to losses in  
" > conveting
" > heat into electricty because there are more conversion steps where you
" > loose energy.  The only way they reduce pollution is if they are  
" > charged
" > by wind, solar or other sustainable means.

but large util power plants are considerably more efficient than your
car's engine running at part throttle.  they're more efficient even if
your car's a diesel.

" ...and if batteries magically become pollution free... :)

this is imho the dirty little secret about current electric and/or
hybrid cars.  i wonder what the recycling impact of all those prius
battery packs will be?
________________________________________________________________________
Andrew Hay                                  the genius nature
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adh at an.bradford.ma.us                       and think what none thought