- Apr 14, 2003
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Over a thousand religious pilgrims have died of heat stroke in Mecca, news outlets tell us.
I have not seen a cartoon of the oceans boiling but that would be far more accurate than most of the editorial cartoons that I do see.
The evidence of global warming is all around us, yet I am often stunned by the arrogance of those who deny that it exists. At the least, many deny that global warming is caused by human activity.
One of the lines we hear is that carbon dioxide is just a part of the atmosphere. It is always been there and so is nothing to worry about. It is beneficial to plants. This notion has just enough truth in it to be dangerous. Is CO2 always harmless?
Contrary to this cheerful picture, carbon dioxide actually has a “permissible exposure limit” in workplaces.
<< The levels of CO2 in the air and potential health problems are ...
From a different source:
<< At 4%, CO2 levels can be fatal. >>
Why is CO2 potentially fatal to humans? It triggers the exhale reflex in the lungs. Above a certain level of CO2, you can only exhale.
The connection between carbon dioxide and global warming is straightforward to anyone who knows anything about chemistry. Carbon dioxide is O=C=O, oxygen double bond carbon, double bond oxygen. The carbon-oxygen double bond absorbs infrared rays on a wavelength crucial to the earth’s climate. Machines are in use every day that make use of this fact, namely infrared spectrometers.
Links
Toxicity: Wisconsin Department of Health Services
https://www.dhs.wisconsin.gov/chemical/carbondioxide.htm#:~:text=5%2C000%20ppm%3A%20this%20indicates%20unusual,harmful%20due%20to%20oxygen%20deprivation
Fatal Level at 4%
www.co2meter.com
I have not seen a cartoon of the oceans boiling but that would be far more accurate than most of the editorial cartoons that I do see.
The evidence of global warming is all around us, yet I am often stunned by the arrogance of those who deny that it exists. At the least, many deny that global warming is caused by human activity.
One of the lines we hear is that carbon dioxide is just a part of the atmosphere. It is always been there and so is nothing to worry about. It is beneficial to plants. This notion has just enough truth in it to be dangerous. Is CO2 always harmless?
Contrary to this cheerful picture, carbon dioxide actually has a “permissible exposure limit” in workplaces.
<< The levels of CO2 in the air and potential health problems are ...
- 2,000–5,000 ppm: level associated with headaches, sleepiness, and stagnant, stale, stuffy air. Poor concentration, loss of attention, increased heart rate and slight nausea may also be present.
From a different source:
<< At 4%, CO2 levels can be fatal. >>
Why is CO2 potentially fatal to humans? It triggers the exhale reflex in the lungs. Above a certain level of CO2, you can only exhale.
The connection between carbon dioxide and global warming is straightforward to anyone who knows anything about chemistry. Carbon dioxide is O=C=O, oxygen double bond carbon, double bond oxygen. The carbon-oxygen double bond absorbs infrared rays on a wavelength crucial to the earth’s climate. Machines are in use every day that make use of this fact, namely infrared spectrometers.
Links
Toxicity: Wisconsin Department of Health Services
https://www.dhs.wisconsin.gov/chemical/carbondioxide.htm#:~:text=5%2C000%20ppm%3A%20this%20indicates%20unusual,harmful%20due%20to%20oxygen%20deprivation
Fatal Level at 4%

Carbon Dioxide Levels Chart
Discover what safe, elevated, and dangerous CO2 levels mean with our carbon dioxide levels chart. Learn how CO2 impacts indoor air quality and when action is needed.
