Reuters: A new wave of documentaries at this year’s Toronto International Film Festival poses a disturbing question: is environmental and social disaster on a global scale imminent and perhaps inevitable? Doomsday visions captured by three filmmakers at the annual industry event may have seemed a bit implausible only a couple of years ago. But after the global economy’s near-death experience over the past 12 months, such ideas may no longer strike audiences as radical or hard to …