Carbon Monoxide occurs naturally due to vocanos, brushfires and forest fires which occur at a far less rate then then they use to since the earth is not as vocanically active as it once was, and fires do not go unabated anymore since man controls wild fires better today. However man and their use of carbon fuels has put carbon monoxide into the atomsphere but nowhere near the levels in the past when vocanos and fires were rampant. Also carbon monoxide reverts to carbon dioxide by the process of oxidization that occurs naturally in the atomsphere, therefore carbon monoxide is short lived and spatially variable in the atomsphere, making hypocritical Gore's arguement completly useless.

As far as using CO2 pumps, I don't like them unless I was racing and had to fix my own flats. Reason I don't like them is because you have a limited supply of air, you have to remember to restock your seat bag after using them and remember to buy more when you run out.

There are several good mini pumps on the market that promise to reach 160psi; but since clinchers don't usually go higher then 135 your well within the pumps limits, and because your within the pumps limits they make it a snap to pump your tires with good minis. Just look for a mini with the higher 160psi rating and you'll be happy.