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Poptech · 30-04-2008, 11:42 AM

Where do you get devasting levels from? Those are not even harmful.

- Carbon Dioxide (CO2) levels in the atmosphere have risen from 280 to 370 ppm over the past 100 years (IPCC)
- Carbon Dioxide (CO2) is not toxic until 5% (50,000ppm) concentration (Source)
- Any detrimental effects of Carbon Dioxide (CO2) including chronic exposure to 3% (30,000ppm) are reversible (Source)
- OSHA, NIOSH, and ACGIH occupational exposure standards are 0.5% (5,000 ppm) Carbon Dioxide (CO2) (Source)

You don't even feel drowsy until 10,000ppm.

30-04-2008, 11:42 AM	#2 (permalink)
Poptech Member Join Date: Apr 2008 Posts: 124	Where do you get devasting levels from? Those are not even harmful. - Carbon Dioxide (CO2) levels in the atmosphere have risen from 280 to 370 ppm over the past 100 years (IPCC) - Carbon Dioxide (CO2) is not toxic until 5% (50,000ppm) concentration (Source) - Any detrimental effects of Carbon Dioxide (CO2) including chronic exposure to 3% (30,000ppm) are reversible (Source) - OSHA, NIOSH, and ACGIH occupational exposure standards are 0.5% (5,000 ppm) Carbon Dioxide (CO2) (Source) You don't even feel drowsy until 10,000ppm.