- The US Department of Agriculture says the average human exhales about 900 grams of CO2/day.
- There are now about 6.62 billion people on the planet, says the US Census Bureau.
- That works out to a total of 2.2 billion MT (metric tons) of CO2 exhaled per year by the human species.
- Humans activities emit a total of about about 27 billion MT of CO2 per year.
- So human respiration is responsible for 8.1% of all human CO2 emissions.
Monday, September 24, 2007
You often find global warming smart alecks, like Ben Shapiro here, suggest that we should all stop breathing in order to solve the carbon dioxide problem. I've always been (extremely) skeptical, but never really ran the numbers. It turns out the idea is indeed absurd -- of all the CO2 humans emit, only about 8.1% is from respiration:
Posted by David Appell at 9/24/2007 06:24:00 PM