Canadian Press: Canada wrapped up negotiations at a United Nations climate conference Friday with a promise to keep climate change at the top of its agenda, even as it was dubbed the most obstructionist country at the summit. “People are quite concerned about this and they’ve made it clear that they want to see this as a priority, and so the government is addressing it as such,” Environment Minister Jim Prentice said Friday in a conference call with Canadian reporters from Poznan, Poland. “The …