On the Mosaic, a red alien race hopes to learn about each Mosaic race as they conquer them.
Unable to negotiate with them or keep them from attacking, John Stewart plants a forest between the red species and the humans. The Mosaic races refuse to help each other against the red alien threat.
After consultation, John realizes that the Guardians consider the Mosaic an experiment in sociology.
Part 1 of 4
The Mosaic cities were brought to Oa by the renegade Guardian Appa Ali Apsa in this series' first story arc. The Guardians have said that Oa's energy must be restored before the cities can be returned to their home planets.
The Mosaic was featured in the series "Green Lantern: Mosaic," starring John Stewart, the appointed Green Lantern of Oa.