Overview: Two scenes from candid cameras tell a troubling story. In one, wild and gravely endangered Sumatran tiger cubs cavort in their forest home. In the next, a bulldozer ploughs through frame. Not far from these hidden lenses are some the world's biggest paper producers and serious questions are being asked about their impact on remote, delicate ecosystems. And as Australia wrestles with its carbon future why are some of our biggest retailers stocking tonnes of office paper produced by the world's largest paper plant under some of the world's biggest greenhouse plumes?