Examiner.com
What I’m about to say isn’t a spoof. It’s the result of research and
discussions with scientists working in the field. For all of you who
need the data, I’ll give them in summary, but you go look up the
mountain of references, do some research for yourself, even get a meter
if you like. You’ll believe the numbers below better if you discover
them on your own. And you won’t need to believe me when I say “I told
you so.”
The following summarizes levels of CO2 under various conditions:
40,000 ppm: The exhaled breath of normal, healthy people.
8,000 ppm: CO2 standard for submarines
2,500 ppm: CO2 level in a small hot crowded bar in the city
2,000 ppm: The point at which my CO2 meter squawks by playing Fur Elise
1,000 to 2,000 ppm: Historical norms for the earth’s atmosphere over the past 550 million years
1,000 to 2,000 ppm: The level of CO2 at which plant growers like to keep their greenhouses
1,000 ppm: Average level in a lecture hall filled with students
600 ppm: CO2 level in my office with me and my husband in it
490 ppm: CO2 level in my office working alone
390 ppm: Current average outdoor level of CO2 in the air
280 ppm: Pre-industrial levels in the air, on the edge of "CO2 famine" for plants
150 ppm: The point below which most plants die of CO2 starvation
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