3 ms·
Presumably you'd need to generate 1.3M liters off of only daylight hours, making it more like 130m*130m per 10K people. Cairo has a population density of 18K p
by ivankirigin 9y ago
Presumably you'd need to generate 1.3M liters off of only daylight hours, making it more like 130m*130m per 10K people.
Cairo has a population density of 18K people per km2, so this would mean covering 2% of the area. For contrast, streets and parking take up ~40% of most US cities.