All Scientists are Sceptics ~Professor Bob Carter

Whenever someone asserts that a scientific question is “settled,” they tell me immediately that they don’t understand the first thing about science. Science is never settled. Dr David Deming

Perhaps the most frustrating aspect of the science of climate change is the lack of any real substance in attempts to justify the hypothesis ~Professor Stewart Franks

A lie told often enough becomes the truth.
-- Vladimir Ilyich Lenin - See more at: http://thepeoplescube.com/lenin/lenin-s-own-20-monster-quotes-t185.html#sthash.aTrSI3tG.dpuf
A lie told often enough becomes the truth.
-- Vladimir Ilyich Lenin - See more at: http://thepeoplescube.com/lenin/lenin-s-own-20-monster-quotes-t185.html#sthash.aTrSI3tG.dpuf
A lie told often enough becomes the truth.
-- Vladimir Ilyich Lenin - See more at: http://thepeoplescube.com/lenin/lenin-s-own-20-monster-quotes-t185.html#sthash.aTrSI3tG.dpuf

Tuesday, 30 December 2014

Levels of CO2 under various conditions



The following summarises levels of CO2 under various conditions:
40,000 ppm: The exhaled breath of normal, healthy people.
8,000 ppm: CO2 standard for submarines
2,500 ppm: CO2 level in a small hot crowded bar in the city
2,000 ppm: The point at which my CO2 meter squawks by playing Fur Elise
1,000 to 2,000 ppm: Historical norms for the earth’s atmosphere over the past 550 million years
1,000 to 2,000 ppm: The level of CO2 at which plant growers like to keep their greenhouses
1,000 ppm: Average level in a lecture hall filled with students
600 ppm: CO2 level in my office with me and my husband in it
490 ppm: CO2 level in my office working alone
390 ppm: Current average outdoor level of CO2 in the air
280 ppm: Pre-industrial levels in the air, on the edge of "CO2 famine" for plants
150 ppm: The point below which most plants die of CO2 starvation
(all of these data vary a little with size of the space, ventilation, wind, and the like)

From CO2 data shows nobody's dead from a little carbon dioxide (link)

No comments:

Post a Comment





All serious comments published after moderation.
Comments should be polite, and respect all views.
No bad language. Spam never makes it!