ClimateWire: It's been more than four years since leaders tried and failed to craft a binding new global climate change treaty in Copenhagen, and as nations head toward a new deal in 2015, the aftershocks of that Danish summit continue to reverberate.
From climate campaigners to high-level diplomats, those who are committed to fighting global warming say making a strong agreement in Paris next year that radically reduces levels of greenhouse gas emissions is critical. But, they argue, it's not the last step...