On 20/09/2012 17:56, harry wrote:
On Sep 20, 9:51 am, Tim Streater wrote:

Snip

And CO2 does not support life
the last I heard.
So you die anyway.

Neither does Nitrogen and the air we breath is 80% made up of it! Out of
interest lack of CO2 can kill you too - too little of it and your body's
reflex to breath can fail.

SteveW