A look at what carbon offset projects do — and don't — accomplish

If you flew anywhere this summer, you were probably offered the option of buying a carbon offset when you bought your tickets. It's an option that's marketed as a way to support forestry or renewable energy projects, to offset the carbon emissions of the trip you're taking. Deutsche Welle, DW's Kathleen Schuster examined whether offset credits actually do what they promise, in this excerpt from the DW's environment podcast "Living Planet."