What is the weight of co2 exhaled by 6 billion+ humans annually?

Question

Just curious.

Answer 1

Depending on your source, the average human exhales between 0.5 and 0.9 kg per day.  So human breathing co2 emissions would be between:

0.5 x 365 x 6.0x10^9  = 1.1 x 10^9 metric tons/year

- and -

0.9 X 365 x 6.0x10^9 = 2.0 x 10^9 metric tons/year

Contrast this with about 27.5 x 10^9 metric tons/year of co2 emitted through other human activities.

Answer 2

I think the data shows that exhaling is the true cause of global warming.  We need to stop this now by eliminating every human on the planet, except Al Gore, because he is the savior of the world, and he deserves to stay alive.

JK

Answer 3

6X10 9th times g CO2/day

but the earth is heading towards a mini ice age around 2020, so the more the better

http://planetdaily.ws/index.php/more/77/