Where to obtain a small amount of liquid nitrogen in north Seattle? [more inside]
posted by Riemann on May 4, 2009 - 7 answers

Not to start a fight but I am curious about this one...If the entire atmosphere is 100% and nitrogen is 89% and the inert gases are 0.9% and the rest is the O2 we breathe and more and more CO2 is being made [carbon burning made that is] from that O2 and not going back out of the system as released O2 will we see a drop in the amount of O2 we have to breathe? Does the actual % of the various gases get checked on by anyone? And would we see it first decline at higher altitudes or in the deaths of animals who need more O2 for their specific needs..........which ones are the mine canaries here?
posted by Freedomboy on Dec 14, 2007 - 12 answers

Why is nitrogen part of so many explosives? [more inside]
posted by Vidiot on Apr 5, 2004 - 12 answers