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Technology has always found its greatest consumer in a
nation's war and defense efforts. Since the last attempts at a
"Star Wars" defense system, has technology changed
considerably enough to make the latest Missile Defense
initiatives more successful? Can such an application of
science be successful? Is a militarized space inevitable,
necessary or impossible?
Read Debates, a new
Web-only feature culled from Readers' Opinions, published
every Thursday.
(12800 previous messages)
lchic
- 06:06am Jul 2, 2003 EST (#
12801 of 12806) ~~~~ It got understood and exposed
~~~~
.... does 'cna' preceed 'dna' ... 'can' 'dan' .... does
'Dan' Dare?
lchic
- 06:30am Jul 2, 2003 EST (#
12802 of 12806) ~~~~ It got understood and exposed
~~~~
"" ... The volcanoes produced two gases: sulphur dioxide
and carbon dioxide. The sulphur and other effusions caused
acid rain, but would have bled from the atmosphere quite
quickly. The carbon dioxide, on the other hand, would have
persisted. By enhancing the greenhouse effect, it appears to
have warmed the world sufficiently to have destabilised the
superconcentrated frozen gas called methane hydrate, locked in
sediments around the polar seas. The release of methane into
the atmosphere explains the sudden shift in carbon isotopes.
Methane is an even more powerful greenhouse gas than carbon
dioxide. The result of its release was runaway global warming:
a rise in temperature led to changes that raised the
temperature further, and so on. The warming appears, alongside
the acid rain, to have killed the plants. Starvation then
killed the animals.
Global warming also seems to explain the geological
changes. If the temperature of the surface waters near the
poles increases, the circulation of marine currents slows
down, which means that the ocean floor is deprived of oxygen.
As the plants on land died, their roots would cease to hold
together the soil and loose rock, with the result that erosion
rates would have greatly increased.
So how much warming took place? A sharp change in the ratio
of the isotopes of oxygen permits us to reply with some
precision: 6C. Benton does not make the obvious point, but
another author, the climate change specialist Mark Lynas,
does. Six degrees is the upper estimate produced by the UN's
scientific body, the intergovernmental panel on climate change
(IPCC), for global warming by 2100. A conference of some of
the world's leading atmospheric scientists in Berlin last
month concluded that the IPCC's model may have underestimated
the problem: the upper limit, they now suggest, should range
between 7 and 10 degrees. Neither model takes into account the
possibility of a partial melting of the methane hydrate still
present in vast quantities around the fringes of the polar
seas. ....
http://www.guardian.co.uk/Columnists/Column/0,5673,988440,00.html
lchic
- 06:36am Jul 2, 2003 EST (#
12803 of 12806) ~~~~ It got understood and exposed
~~~~
RU billionaire buys UK club
http://www.itv.com/news/1149599.html
rshow55
- 12:04pm Jul 2, 2003 EST (#
12804 of 12806) Can we do a better job of finding
truth? YES. Click "rshow55" for some things Lchic and I have
done and worked for on this thread.
Gisterme can ask good questions faster than I can
respond. He asked about global warming control - and I've been
working at it, but am not finished yet.
Manbiot's piece "Shadow of Extinction" http://www.guardian.co.uk/Columnists/Column/0,5673,988440,00.html
makes the case, as many others do, that global warming is a
problem that needs to be fixed.
It is as big a problem as it is. Human resources are big,
too. It shouldn't be beyond the wit of man to fix this
problem.
Judging roughly from http://www.guardian.co.uk/globalwarming/graphic/0,7367,397009,00.html
, world C02 emissions are roughly 15 billion tons/year - or
about 3.75 billion tons/year of carbon.
Guessing from hay prices in the US, US agriculture could
probably grow hay - in very large volume - for about 40$/ton
of carbon - a little more efficiently than now.
3.75 billion tons/year at 40$/ton is 150 billion
dollars/year.
Could that carbon be made and buried - taken out of
the ecosystem - for that price? For some higher price, at
least, such a thing could be done.
My guess, after a little work, is that aquaculture on the
equatorial oceans could grow carbon - and bury it in the sea -
for a good deal less - perhaps for a shadow price of 5-10$/ton
- or even less. It would take an area roughly the size of
Texas to do so.
Less than 2% of the ocean area between 5 degrees N and S
latitudes, perhaps much less.
That would be a cost/year of 19-38 billion/year - compared
to 800 billion/year spent now for crude oil.
A tax of 2.5-5% on oil transported over oceans would
suffice to fund this.
I think that the global warming problem and the world's
energy supply problem should be fixed together - on a
money-making basis.
Perhaps carrying enough tax burden to fund the UN better
than it is today - and fund immunizations and minimal public
health expenditures world wide.
If the tax burden went with political facilitation of the
work from the UN - this might be a straightforward thing to
get done - with the level of human initiative it now takes to
make a summer movie.
And with the organizers well paid, in both money and
status.
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