Question

What percentage of the land on earth is usable, for living on, but not for agriculture/farming?

Answer 1

its true, due to decrease of fertile land all over the world, & increasing of population...

Answer 2

Thanks but would you happen to know the percentage?

Answer 3

all of it if we can develop technology in which we can survive extreme climates (polar regions, arid landscapes)

Answer 4

i mean, building upwards is probably a better option

Answer 5

you can farm in greenhouses anywhere if you have appropriate insulation, etc. it's just very costly