With melting glaciers dramatically threatening its water supply, it is no surprise that Bolivia is emerging as a leader of the global South in the fight against climate change. And its climate negotiators have become eloquent advocates for a new, big idea that is reinvigorating the climate justice movement: "climate debt." In this first, in-depth television segment on the idea of climate debt, Avi Lewis asks what the historical polluters of the global North owe the poor countries of the South -- and how such an honest reckoning could encourage the global, technological collaboration demanded by our climate crisis. Naomi Klein acted as a consultant for the piece, which also includes great coverage of the Cochabamba climate conference and a stunning view of Bolivia's epic and imperiled landscape. Watch the new edition of Fault Lines here.