Let's push on to 450ppm! Plants will love you for it!

I'd have to agree with this commenter on this post of Tim Blair's I pointed to earlier: I’ll just go off and turn on some lights, start the dishwasher and wash some clothes. I’ve already burnt some petrol for no reason other than it is fun in my MX-5. How about we go for 450?  Man loves a challenge and the plants will thrive! JBG of Sydney (Reply) Sat 24 Oct 09 (04:03pm) And yes, plants will love you for the extra carbon dioxide. Greenhouse keepers don't artificially raise its concentration in their greenhouses to 1,000ppm or more for nothing you know.

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