As is often the case nowadays, the headline does not quite match the content. I find this whole subject of CO2 interesting for our purpose of growing orchids and the question of global warming.
There are several very interesting articles at http://www.co2science.org/ The folks who run that group feel strongly that increased CO2 is increasing plant growth if you follow them for a period of time. Please all of you global warming advocates, don't start attacking merely because I am adding a little counter view here. Buzz
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