wrote in message
...
See:

http://www.telegraph.co.uk/earth/env...sun-shade.html

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Gaah! Here's one of those links to nowhere by someone too lazy to focus
and write at least an abstract. This links to ...what? A seething mass
of malware that wants in to my machine? *No way* am I going to open
myself to *that*.

A 100,000 square mile sunshade works out to about 357 miles diameter.
Compared to 8000 miles diameter for Terra, it doesn't look like much. I
suppose it could be orbited in the subsolar trojan -- which I don't
think is a very good trojan, so it would need frequent adjustment.

What would this accomplish and from an engineering point of view, is it
doable?

My own thinking is, how about direct application of solar power and
local water to reconstitute our excess carbon dioxide back into
hydrocarbons? Which could then be re-used as fuel again, or serve for
structural applications?

Titeotwawki -- mha [sci.space.policy 2009 Mar 05]