fun facts about CO2
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From: Covington WA, USA
Originally Posted by DrCloud,Mar 4 2009, 10:28 AM
In the foothills west of Denver, there's about 80% as much oxygen as at sea level. People of all ages live there quite happily.
As for CO2, it is toxic at high levels, but that's not the issue here. The amount already in the atmosphere has profound effects on our lives. (Further) changing it will also affect our lives long before it reaches levels that are directly toxic.
If there were no CO2 in the atmosphere, the earth would be colder and most of the plants and animals we know would be dead. But if a little is good, that does not mean more is better.
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From: EstesPark/BocaRaton
Originally Posted by mikegarrison
Are people in Denver really happy? Or are they just faking it?
It wouldn't surprise me of some of the statements that started this were from the Idso bunch. Their Center for the Study of Carbon Dioxide and Global Change seems to have gone dormant, but for years they were putting out all sorts of pro-CO2 propaganda, much of it based on some (now discredited) experiments by patriarch Sherwood on how elevated CO2 levels affect plant growth. HPH
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From: Long Beach, MS
Originally Posted by DrCloud,Mar 4 2009, 10:28 AM
And ...
"Just above"?
In the foothills west of Denver,...no one "suffocates."
Credibility seems to be hard to come by these days.
Originally Posted by tof
It is like saying that the level of oxygen in the atmosphere is just above suffocation level for people. If it were lower we would suffocate.
In the foothills west of Denver,...no one "suffocates."
Credibility seems to be hard to come by these days.
I was trying to illustrate to Kyras what the original statement re levels of co2 meant. Kyras got it. Why didn't you, Doc?
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From: Wildwood, TN.
Originally Posted by boltonblue,Mar 4 2009, 04:55 AM
did you know that solid CO2 better known as dry ice, will extract the water from an alcohol / water / fruit juice solution resulting in a much higher concentration of alcohol in the mixture?
on campus they referred to this particular form as a hairy buffalo.
on campus they referred to this particular form as a hairy buffalo.
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Originally Posted by DrCloud,Mar 4 2009, 03:48 PM
It wouldn't surprise me of some of the statements that started this were from the Idso bunch. Their Center for the Study of Carbon Dioxide and Global Change seems to have gone dormant, but for years they were putting out all sorts of pro-CO2 propaganda, much of it based on some (now discredited) experiments by patriarch Sherwood on how elevated CO2 levels affect plant growth. HPH
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From: Long Beach, MS
Originally Posted by cordycord,Mar 3 2009, 09:34 PM
First, do you know that carbon dioxide (CO2) in our atmosphere is:
--only slightly more than 1/3rd of 1/10th of 1 percent?
--just recovering from the lowest level in the history of the earth?
--the source of carbon for all life forms, on land or in the sea?
--only slightly above the suffocation level for green plants?
--a fraction of the level for which evolution designed plants?
--so low as to cause some people breathing problems?
--increased by 130 times and more when administered to sick patients?
--considered a pollutant by the U.S. Supreme Court?
Over the last 350 million years CO2 has varied by 10 fold, approximately 250 ppm to 2,500 ppm with an average level of 1,500 ppm. This average level happens to be the optimum level for plants, it seems by evolutionary design, and is the reason that this level of CO2 is used in greenhouses Since plants and animals evolved together it's likely that humans also evolved to function best at some higher level. However, at 380 ppm we are not far from the lower end of that 10 fold range.
Has anyone heard this before? It's copied from a reliable source, but there wasn't any attribution.
--only slightly more than 1/3rd of 1/10th of 1 percent?
--just recovering from the lowest level in the history of the earth?
--the source of carbon for all life forms, on land or in the sea?
--only slightly above the suffocation level for green plants?
--a fraction of the level for which evolution designed plants?
--so low as to cause some people breathing problems?
--increased by 130 times and more when administered to sick patients?
--considered a pollutant by the U.S. Supreme Court?
Over the last 350 million years CO2 has varied by 10 fold, approximately 250 ppm to 2,500 ppm with an average level of 1,500 ppm. This average level happens to be the optimum level for plants, it seems by evolutionary design, and is the reason that this level of CO2 is used in greenhouses Since plants and animals evolved together it's likely that humans also evolved to function best at some higher level. However, at 380 ppm we are not far from the lower end of that 10 fold range.
Has anyone heard this before? It's copied from a reliable source, but there wasn't any attribution.
To expand on DrCloud's point, according to the Wisconsin Dept of Health Chemical Fact Sheet on Carbon Dioxide, CO2 levels greater than 5,000 ppm (a bit more than 10 times current ambient levels) can produce "serious oxygen deprivation resulting in permanent brain damage, coma and even death." So those patients getting 130 times current ambient levels (about 6,000 ppm) better not be getting those levels for long.
Nope...I don't give that source quoted in the op much credence, either.
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From: Long Beach, MS
Originally Posted by DrCloud,Mar 4 2009, 12:31 PM
I was using these facts to dispute your "explanation" of the original assertions, which are crap.
Are you able to understand this now? HPH
Are you able to understand this now? HPH
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From: SoCal
OUCH!! Wikipedia proves me wrong again....
When I read it, I actually thought they were talking about plants "suffocating", not people.
If I were just a layperson (which I am) and saw this list, I'd believe the following:
--only slightly more than 1/3rd of 1/10th of 1 percent? Wow, but ok.
--just recovering from the lowest level in the history of the earth? Wouldn't believe it, but Wikipedia says it's true
--the source of carbon for all life forms, on land or in the sea? Nope. I would have thought carbon in the ground for some reason...
--only slightly above the suffocation level for green plants? No way.
--a fraction of the level for which evolution designed plants? I wouldn't have believed this--how does one tell?
--so low as to cause some people breathing problems? how can you fake this? :thumbump:
--increased by 130 times and more when administered to sick patients? Nope
--considered a pollutant by the U.S. Supreme Court? I believe what anyone says about our legal system
So I'm not a scientist, nor do I play one on TV, but that's what I think passes and fails the "smell test".
When I read it, I actually thought they were talking about plants "suffocating", not people.
If I were just a layperson (which I am) and saw this list, I'd believe the following:
--only slightly more than 1/3rd of 1/10th of 1 percent? Wow, but ok.
--just recovering from the lowest level in the history of the earth? Wouldn't believe it, but Wikipedia says it's true
--the source of carbon for all life forms, on land or in the sea? Nope. I would have thought carbon in the ground for some reason...
--only slightly above the suffocation level for green plants? No way.
--a fraction of the level for which evolution designed plants? I wouldn't have believed this--how does one tell?
--so low as to cause some people breathing problems? how can you fake this? :thumbump:
--increased by 130 times and more when administered to sick patients? Nope
--considered a pollutant by the U.S. Supreme Court? I believe what anyone says about our legal system
So I'm not a scientist, nor do I play one on TV, but that's what I think passes and fails the "smell test".