1.   Bostwick reaches into his bookshelf and pulls out a map of Phoenix showing all the Hohokam canals and villages, overlaid by the city street grid.

2.   It is the source of the city grid, which flows from this tiny hill like conceptual lava from a volcano.

3.   Picture a flat city grid with every avenue having a pop-up barrier at each intersection, capable of diverting traffic down any side streets.

4.   The city grid is replaced by diagonals.

5.   The indistinct gray-brown city grid far below gradually reveals potential landing sites.

6.   More power is coming from a cargo ship, the Union Rotorua, moored in Auckland harbor with its generator cables hooked to the city grid.

7.   More power is coming from a cargo ship, the Union Rotorua, hooked to the city grid with generator cables.

8.   The protesters put up their own power-generator for the rally after police banned them from using the city power grid.

9.   They have developed a chemical process and computer program that create some order to the molecular system and allow it to be mapped like a city grid.