Micheal,
The worrying thing is the long term CO2 trend.
Life on Earth is going to have a problem long before the sun dies or
becomes a red giant. The CO2 is all getting sequestered in the rocks
and below 100ppm in the atmosphere all the plant life dies followed
shortly by all the animal life and if we're still around, then us.
We're doing the biosphere a service by releasing locked up carbon.
However burning coal for stationary power generation is a pretty
nasty business as various things like mercury and radioactive
elements in the coal are released into the atmosphere. Coal power
plants would be shut down if they were nukes due to the radioactive
release. Better to convert to liquid transport fuels where some of
the nasties can be taken out in the process. The best way to use
hydrogen as a fuel is to tie it to carbon atoms. Then we can continue
to drive to gliding sites and still have fuel for launches.
Mike
At 02:34 AM 25/10/2008, you wrote:
Maybe I missed it, but I can't see what CO2 has to do with it.
The average temp of the Earth has been stable at 22 degrees C for the
last 600 million years except for brief periods during which it plummets
to 12 degrees C for 10 million years or more before shooting back up to
22 again. None of these variations showed any correlation to CO2 level.
http://www.paulmacrae.com/wp-content/uploads/2008/06/co2-levels-over-time1.jpg
http://www.paulmacrae.com/?p=29
Currently it is up to 14 deg C.
Personally I feel that Humans made a big mistake by evolving during the
coldest 2 million years on Earth (the last 2 million). What on earth did we
think we were going to do when it warmed back up to 22 deg C again?
No forward planning.
25,000 species become extinct per year (or about 1 per million of
currently living species per year according to fossil records).
How are we going to power all those air-conditioners we'll need?
But Soaring will be GREAT!
http://www.geocraft.com/WVFossils/Carboniferous_climate.html
http://www.geocraft.com/WVFossils/ice_ages.html
> On Thu, 23 Oct 2008 09:54:37 +1000, Mike Borgelt wrote:
> >I'm happy to support a 50% + reduction in Australian CO2 emissions by
> >2023. This is simple to do and completely within current
> >technological capabilities. Just replace all coal fired base load
> >electricity generation with nuclear, build extra capacity to replace
> >the peak load gas fired turbines and shed the extra to water
> >desalinators when not required for the grid. When I see this plan
> >being pushed by the greenies we'll all know they are serious.
>
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