7 billion people
600 sqft / person (My apartment has about 600 ft.² of wall space)
let’s say the mass of the moss is about two heads of lettuce per square foot (cut the head of lettuce in half)
Each head of lettuce weighs 1 pound
I remember reading that plants are about 20% carbon. Or was it 2%?
and 1 ton is about 2,000 pounds
7B p x 600 sqft/p x 2 lettuce / sqft x 1 lb / lettuce x 0.2 lb C / lb x 1 ton / 2000 lb = 840M tons of carbon
We need to remove roughly 260B tons of carbon. So 0.003 of what we need to remove.