Actually, if you could somehow use balloons filled with human-breathable air as floating devices, you could float about 50 km above Venus surface, in a nice ear

Actually, if you could somehow use balloons filled with human-breathable air as floating devices, you could float about 50 km above Venus surface, in a nice earth-like 1 atm pressure and 0–50 C temperature range. http://en.wikipedia.org/wiki/Colonization_of_Venus#Aerostat_habitats_and_floating_cities http://en.wikipedia.org/wiki/Colonization_of_Venus#Aerostat_...