Board Thread:Speculation House/@comment-14138255-20141017020106/@comment-25411051-20141017160821

^ Every action has an equal and opposite reaction.

Fossil fuel usage produces pollution. Dust usage produces Grimm.

In the beginning when Dust was used in it's natural form the Grimm were less horrific. As humanity processed, purified and increased the usage of Dust the Grimm became "more horrific" and varied.

That's just my personal opinion.