The population will increase by a factor of exp(.013780) = 25336.5 So we should be at roughly 25,336 meters / person currently. (But remember that plenty of th

The population will increase by a factor of exp(.013780) = 25336.5 So we should be at roughly 25,336 meters / person currently. (But remember that plenty of that is more-or-less unlivable--Siberia and the like.) In 50 years, the population will have increased by a factor of exp(.013 50) = 1.91554, so in the next 50 years population will roughly double, so that number will go down to about 13k meters/person.