Agence France-Presse: Canada aims to reestablish itself as an environmental defender at the UN climate talks in Copenhagen by calling on all major emitters to cut carbon emissions, but distrust lingers as its own emissions soar. Canada signed and ratified the Kyoto Protocol but has so far failed to meet its corresponding obligations. The December 7-18 meeting in Copenhagen aims to hammer out a pact to replace the treaty before it expires in 2012. Proof the government is mindful of its reputation as …