Plants lock up CO2 so reducing CO2 levels will reduce the ability of plants to grow. The plan for large mirrors in space to reduce the solar energy reaching earth will only slow down plants photosynthesis and therefore will not reduce CO2 levels
A good sink of CO2 is timber yet forests are being cut down and burnt worldwide. Britain was once @90% woodland but now its only @12%
(, Mon 3 Nov 2008, 15:46, Reply)
Reducing CO2 levels too far might be a bad idea - some greenhouse effect is a necessary criterion of there being any life on Earth at all - but that's not an argument against trying to keep them in the 300-450ppm range.
It's also the case, though, that we're emitting CO2 at a rate that would be impossible to counterbalance by reforestation, and that global warming (in the short term, at least) is likely to cause more plant deaths than growth owing to increased forest fires and so on.
Beyond that, cheers for pointing out the blindingly obvious.
Right: home time!
I think you're right that a space mirror would be a daft way to solve the problem, btw.
(, Mon 3 Nov 2008, 15:53, Reply)
As part of Nasa's 'Geoengineering' plans.
(, Mon 3 Nov 2008, 16:17, Reply)
...absorbed by algae innit?
Seem to remember reading that this rainforest malarky is over-milked. But that's probably just disinformation from the giant lizards again.
Never trust a giant lizard.
(, Mon 3 Nov 2008, 16:24, Reply)