CIR and FRONTLINE/World track the emerging market in forest carbon offsets. In this FRONTLINE/World segment (broadcast May 11) CIR senior correspondent Mark Schapiro and producer Andres Cediel travel deep into the Atlantic Forest and the Amazon, where they discover what life is like on the other end of an offset deal. >> Watch the full episode online after broadcast on May 11. >> See web exclusive features on Carbon Watch.

Mark Schapiro specializes in international and environmental stories. His award-winning work appears in all media: in publications such as Harpers, The Atlantic, Mother Jones and Yale 360; on television, including PBS FRONTLINE/World and KQED; on public radio including Marketplace; and on the web. He is currently writing a book for Wiley & Co. investigating the backstory to our carbon footprints. His previous book, "EXPOSED: The Toxic Chemistry of Everyday Products and What’s at Stake for American Power," reveals the health and economic implications of the tightening of environmental standards by the European Union.