On Thu, Feb 15, 2007 at 02:34:42PM +0400, Ramakrishnan Sundaram wrote: > Aren't we there already?
Some of the models show a positive-feedback, some of the more outlandish ones are positively alarming (hints of sulfides in the great extinction sediment horizonts, this can be very bad news). The jury is out, but given the worst-case outcomes it's criminally negligent to ignore. Of course, if something takes cooperation of the whole species, and runs contrary to short-term commercial interest, *and* is complicated, or at least nonobvious... ...we better hope it's not true, because otherwise we're quite screwed. As to CO2 sequestering, biomass growth in 1/3rd of the oceans seems to be iron-limited, so beating the effect of a few kilotons (or megatons) of iron salts sprinkled in specific locations at specific times would be hard (that's some smart muscle). Of course, large scale plankton blooms in places where it never happens might become a worse problem than the one it attempts to solve. Or not. -- Eugen* Leitl <a href="http://leitl.org";>leitl</a> http://leitl.org ______________________________________________________________ ICBM: 48.07100, 11.36820 http://www.ativel.com 8B29F6BE: 099D 78BA 2FD3 B014 B08A 7779 75B0 2443 8B29 F6BE
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