some questions defy a sensible answer
Obviously I should apologise to Stuart for posing a question which was too stupid

some questions defy a sensible answer

Obviously I should apologise to Stuart for posing a question which was too stupid![]()
)Obviously I should apologise to Stuart for posing a question which was too stupid![]()
My apologies if I have upset you, I assumed your question had to be a wind up!
If it was a genuine question however the simplest answer I can give is:
No you wont asphyxiate from the CO2 given off by trees in the night when sleeping beneath them, if that where possible nobody could live in large forests such as Siberia or in tropical rain forests and the entirety of mankind would have perished in its sleep long before we evolved to the stage where we could ask such questions

I seem to remember hearing that hospital used to remove plants from patient rooms for this reason. I'm sure that since the days of air conditioning etc that this is no longer practiced either though.
I remember being taught that trees absorb carbon dioxide and give out oxygen during the day but at night the reverse happens. Several times while sleeping in my hammock I have found that I have woken short of breath. Am I being stupid or is it possible that the carbon dioxide (which sinks to the ground) is at least partly responsible?
Has anyone else had a similar problem?
That's not exactly right. During the day, plants use and produce CO2 simultaneously. CO2 is a byproduct of cellular respiration. Plants respire both night and day. I doubt that the quantity of CO2 produced at night is that much different than produced during the day although I would guess that plants are more metabolically active during the day for several reasons (except for desert plants that do CAM photosynthesis). The main difference in ambient CO2 (if there is a biologically significant difference which I doubt) would be caused by uptake during the day. I would bet the amount of CO2 increase you are exposed to from plants at night pales compared to the CO2 buildup within an enclosed tent that comes from your own respiration. I do know that a roomful of students can raise CO2 levels 200 ppm or more.And of course, sitting around a campfire or sleeping next to one will increase your exposure to CO2 as well.
