By Philip Womble & Martin Doyle With the exception of greenhouse gas trading programs, environmental markets are prisoners of their own geography — and with good reason. Climate change is a global phenomenon, and so carbon markets can be geographically all-inclusive — a ton of carbon dioxide emitted in Beijing has the same effect as a ton of carbon dioxide emitted in New … [Read more...] about The Geography of Trading Ecosystem Services: A Case Study of Wetland and Stream Compensatory Mitigation Markets