- David Hoag
What do you think the carrying capacity of the Earth is?
I recently read it is a popular belief amongst scientists that the Earth's carrying capacity is between 9 and 10 billion people.
If there is any truth to the idiom 'Necessity is the mother of invention', I'd wager quite a bit higher. Considering some of the factors used to make this estimate (access to freshwater, amount of arable land, etc.), I feel the number should be much higher. Invention and innovation will create more efficient things. I mean, the oceans alone offer a great deal. Growing up, not out. Changing food sources to synthetic varieties could certainly cause one to recalculate the carrying capacity.