In some of these areas, there's not enough water, there's no energy, it's going to cost tens of trillions of dollars to lay out the sewer lines and to build the facilities and to operate and maintain these systems,
In sommige gebieden is onvoldoende water, geen energie voorhanden, het kost tientallen biljoenen dollars om de rioleringen aan te leggen, en alle voorzieningen te bouwen en te onderhouden.