Canadian Press: Charlie Furlong knows the lands and waters of the Mackenzie Delta like a childhood chum, but now his old friend is acting strange. "The Gwich’In, you know, we’re used to adapting, so that’s what it is now," says Furlong, chief of the Aklavik Gwich’In First Nation, tucked high up in the top left shelf of the continent. Viewed from the south, Arctic climate change can seem a confusing ecological and geopolitical tangle, accompanied by a media montage of stranded polar …