CO2 levels in US submarines:
"We try to keep CO2 levels in our U.S. Navy submarines no higher than 8,000 parts per million, about 20 time current atmospheric levels. Few adverse effects are observed at even higher levels." – Senate testimony of Dr. William Happer.
http://epw.senate.gov/public/index.cfm?F...
The breathing of car exhaust fumes argument is ridiculous, in my opinion. Think which gases you can breathe in with impunity.
100% Nitrogen - you die.
100% Argon - you die.
100% Water Vapour - you die.
100% CO2 - you die.
100% CO - you die.
The only interesting one is oxygen and if that is not organised correctly e.g. O3 - you guessed - you die.
O2 looks like a possibility but the results may surprise you: http://www.howstuffworks.com/question493...
Also, consider this quote: "Your body needs carbon dioxide to work properly." from here: http://www.calmclinic.com/anxiety/sympto...
This article suggests that CO2 is toxic at the 5% level: http://arizonaenergy.org/News_10/News_Oc...
5% is 50,000 ppm - current atmosphere is 400 ppm or 0.04%.
EDIT: The man's name was Happer not Harper. I thought he was quite famous but obviously not famous enough.
The quote is at the bottom of page 6.
See this from NASA if you want a different view: http://ntrs.nasa.gov/archive/nasa/casi.n...
Feel free to use Google to find your own data. I am not forcing you to believe mine but I always post in good faith.
Also, the question mentioned CO2 poisoning and not greenhouse effect - hence the line of my reply.
Yes CO2 can kill and does there are cases of sewer workers climbing down into pits filled with CO2 (Co2 is heavier than air and can accumulate in low areas) passing out and dying, but that was where the levels were incredibly high almost pure CO2.
My personal belief is 800ppm is the ideal amount for most of life on earth, 1000ppm would be okay too.
Many greenhouse's are operated at 1200ppm for increased production, without any effects on the workers.
LMAO Zip you science genius, you!!! Carbon is the building block of all living things, not CO2 Oh, and the EPA finally got around to classifying CO2 as a pollutant last year. Start your car and stand in an enclosed garage with it and tell me it isn't poison Yes. CO isn't healthy either
Current CO2 is the highest it has been in 800,000 years and is tied to current AGW 1,000 ppm would devastate the planet but it would recover when all human life is long gone
I am afraid someone might have slipped something into both of you swiss mocha's, and it wasn't brain power.
Uh, no.
Graphicconception -
I could not find the quote of Dr. Harper in the paper that you linked. I may have overlooked it. I did find these quotes:
"My name is William Happer, and I am the Cyrus Fogg Bracket Professor of Physics at Princeton University. I am not a climatologist, but I don’t think any of the other witnesses are either."
Now please take note of where he is saying this - Climate Change: U.S. Senate Environment and Public Works Committee Senator Barbara Boxer, Chair. Is it any wonder that politicians seem to be so ignorant on the subject of climate change?
And then there is this quote - "I have come here today as a concerned citizen to express my personal views, and those of many like me, about US climate-change policy. These are not official views of my main employer, Princeton University, nor of any other organization with which I am associated."
He just wants to express his personal views, in a Congressional hearing on Climate Change and U.S. policy concerning Climate Change? Is it any wonder why we are in the shape we are in now???
BTW, graphicconception, you may be trying to show that CO2 levels at 8000ppm is not considered toxic by Dr. Harper, but his address to Congress concerned climate change. I would have had to ask Dr. Harper how much sunlight penetrates the hull of a submarine should he have brought this up during a hearing and making a claim that 8000ppm of CO2 is not detrimental to human health. And for what period of time of exposure is Dr. Harper talking about with CO2 levels that high?
Environment= All non solids that rise into the upper atmosphere separate into nothingness by nature and this includes gases, exhaust, co2, smoke, ETC. Global Warming ended in 2012. Mike
Carbon dioxide is a greenhouse gas, not a poison gas. 1000ppm carbon dioxide wouldn't be bad because of any toxic effects. It would be bad because millions of square miles of land would be flooded due to rising sea levels.
There's nothing poisonous about CO2.
It's the basic chemical compound of most all living things.
1000ppm wouldn't hurt anything and would definitely enhance plant productivity and create more biomass in most all plants.
1000ppm of CO2 is probably a normal indoor CO2 level. You have been in many situations where you have breathed 1000ppm of CO2.
Co2 levels are not rising.
otherwise CO2 poisoning?
