I think they meant more along the lines of "We should take half of the 17,235,800 square kilometers of cultivated land in the world and return it to nature" O

I think they meant more along the lines of "We should take half of the 17,235,800 square kilometers of cultivated land in the world and return it to nature" Or even "We should take half of the 1,549,600 square kilometers of permanent cropland"