If recent environmental news has gotten you down — if you can’t believe the Obama Administration backed away from the chance to establish stronger smog regulations, or if you watch with a sense of helplessness as the N.C. legislature moves to weaken the permitting process for polluting industries — here comes an event that might help you recover your inner enviro-warrior. Bill McKibben will deliver a keynote address via Skype at the Global Transformation Festival in Gerton, Saturday, Oct. 15.