Board Thread:Episode Discussion/@comment-24573226-20161019165813/@comment-25110963-20161019172337

67.140.219.236 wrote: As Atlas grew in innovation and technology, people moved there. The ones left in Mantle were salty about people wanting to live somewhere better.

This begs the question why hasn't Vacuo done something similar? Their climate is just as harsh. Maybe they don't have the dust stores for it. I think Grimm can survive the heat rather than steep cliffsides and weather cold enough to freeze them.