In 1700 Farming Claims Almost Half Earth's Land 40% of its land 40% of the Earth’s terrestrial surface. half of the earth’s habitable landmass Farming Claims Almost Half Earth's Land, New Maps Show. half of the earth’s habitable landmass Full Article from National Geographic 40% of its land 40% of global land area Farming Claims Almost Half Earth's Land, New Maps Show half of the earth’s habitable landmass half of the earth’s habitable landmass Between 1900 and 2012 half of the earth’s habitable landmass Farming Claims Almost Half Earth's Land, New Maps Show