Thank you guys most profusely. If you are interested, it might be instructive to perform the following calculation: Notwithstanding means of production and distribution of life support, suppose one person requires 100 sq ft of living space 10 ft high. If housing covered every square foot of the planet (supposing means of flotation and for heating and pumping oxygen to the top), to accommodate 3 x 10^45008 bodies how high would the resulting structire have to be. For instance, wouldn't it reach past the moon

At a certain altitude closer to the sun of course heating wouldn't be required

dalehileman