Originally posted by AlbertaFarmer5
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Originally posted by jazz View PostWe are in one of the lowest cycles of CO2 in this planets history.
At 250ppm plants will stop actively growing. That means O2 release by plants starts to decline as well.
At 180 ppm they will start to die.
If we want to feed 11B people we should be raising our CO2 footprint not lowering it.
People are basically voting for their own death by restricting food supply.Last edited by dmlfarmer; Nov 25, 2019, 10:51.
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Originally posted by dmlfarmer View PostJazz, since in your books CO2 is all good, even at prehistoric levels before man, maybe you can talk to your pal Trump and get him to remove the CO2 scrubbers on all submarines, space craft and the ISS. He could save on the cost of building and operating without scrubbers and promote plant growth at the same time! It is the type of policy Trump would endorse.
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Originally posted by Zephyr View PostAt 2000 PPM (give or take) humans start to feel side effects of CO2 like insomnia nausea and headaches.
There's so much stupid in this thread my head hurts.
Carbon Dioxide Concentration (Percent)/Time/Effects
17 - 30 / Within 1minute / Loss of controlled and purposeful activity, unconsciousness, convulsions, coma, death
>10 – 15 / 1 minute to several minutes / Dizziness, drowsiness, severe muscle twitching,
unconsciousness
7 – 10 / Few minutes / Unconsciousness, near unconsciousness
1.5 minutes to 1 hour / Headache, increased heart rate, shortness of breath, dizziness, sweating, rapid breathing
6 / 1 – 2 minutes / Hearing and visual disturbances
#16 minutes / Headache, dyspnea
Several hours / Tremors
4 – 5 / Within a few minutes / Headache, dizziness, increased blood pressure, uncomfortable dyspnea
3 / 1 hour / Mild headache, sweating, and dyspnea at rest
2 / Several hours / Headache, dyspnea upon mild exertion
from US EPA. https://www.epa.gov/sites/production/files/2015-06/documents/co2appendixb.pdf
Other research shows prolonged exposure at 1% will result in same health issues experienced at the 2 % level. Zephyr, instead of just saying the information presented is stupid, how about rather than just one level of exposure, with no exposure time and especially when you add "give or take" in your exposure levels on health effects, how about posting a source of your claim.
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Originally posted by dmlfarmer View PostTable B-1. Acute Health Effects of High Concentrations of Carbon Dioxide
Carbon Dioxide Concentration (Percent)/Time/Effects
17 - 30 / Within 1minute / Loss of controlled and purposeful activity, unconsciousness, convulsions, coma, death
>10 – 15 / 1 minute to several minutes / Dizziness, drowsiness, severe muscle twitching,
unconsciousness
7 – 10 / Few minutes / Unconsciousness, near unconsciousness
1.5 minutes to 1 hour / Headache, increased heart rate, shortness of breath, dizziness, sweating, rapid breathing
6 / 1 – 2 minutes / Hearing and visual disturbances
#16 minutes / Headache, dyspnea
Several hours / Tremors
4 – 5 / Within a few minutes / Headache, dizziness, increased blood pressure, uncomfortable dyspnea
3 / 1 hour / Mild headache, sweating, and dyspnea at rest
2 / Several hours / Headache, dyspnea upon mild exertion
from US EPA. https://www.epa.gov/sites/production/files/2015-06/documents/co2appendixb.pdf
Other research shows prolonged exposure at 1% will result in same health issues experienced at the 2 % level. Zephyr, instead of just saying the information presented is stupid, how about rather than just one level of exposure, with no exposure time and especially when you add "give or take" in your exposure levels on health effects, how about posting a source of your claim.
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Originally posted by jazz View PostYou guys are so precious. Human breath has a concentration of 4000 ppm.
People aren't passing out at hockey and basketball games.
And how much natural circulation there is on older buildings.
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Originally posted by jazz View PostYou guys are so precious. Human breath has a concentration of 4000 ppm.
People aren't passing out at hockey and basketball games.
BTW, Zephyr why was the buildup of CO2 on Apollo 13 so critical that they had to improvise a scrubbing system given your self declared superior knowledge?Last edited by dmlfarmer; Nov 28, 2019, 18:13.
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Originally posted by dmlfarmer View PostBTW, Zephyr why was the buildup of CO2 on Apollo 13 so critical that they had to improvise a scrubbing system given your self declared superior knowledge?
Where am I saying high concentrations of CO2 are OK? I said the exact opposite.
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Originally posted by Zephyr View PostYou realize 2000 PPM is 0.2%, right?
Where am I saying high concentrations of CO2 are OK? I said the exact opposite.
At 2000 PPM (give or take) humans start to feel side effects of CO2 like insomnia nausea and headaches.
There's so much stupid in this thread my head hurts
I thought you were saying my claim of health effects of high levels of CO2 were stupid.
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