Eco-warrior Al Gore and the directors of An Inconvenient Sequel: Truth to Power are roaring through town this week for a screening and panel discussion of the film. Conditions have worsened in the decade since the first movie, and this material is alarming to watch: flooded roads in sunny Miami Beach (virtually underwater), exploding glaciers melting into a gushing mess, cracked desert ground where lushness once prevailed. But Gore strikes an angrier note than ever before, issuing a rallying cry for old environmentalists and folks newly emboldened by recent politics alike.