Inter Press Service: As what was supposed to be a breakthrough year for action on climate change comes to a close, one indicator of the disappointment surrounding an anti-climactic outcome in Copenhagen and stalled U.S. Senate legislation can be seen on the European Climate Exchange. The main exchange for the carbon emissions allowances that are traded as part of the European Union’s Emissions Trading System saw carbon dioxide emissions drop to a six-month low of 12.4 euros in Copenhagen’s aftermath and …