"Steve Bannon left Biosphere 2 after two years, but his departure was marked by an 'abuse of process' civil lawsuit filed against Space Biosphere Ventures by the former crew members who had broken in.[70] Leading managers of Biosphere 2 from the original founding group stated both abusive behaviour by Bannon and others, and that the bankers’ actual goal was to destroy the experiment."

Shocking ...

From reading the Wikipedia article, it sounds like "run by" overstates his role, but wow nevertheless.

I believe bannon came in after the experiment had already concluded.