Press Association: People in the UK are being urged to support a legal fight by a Canadian Cree community against “tar sands” – a form of fossil fuel which campaigners warn could help push the world into a climate disaster. The Co-operative Financial Services is backing the Beaver Lake Cree Nation, who are fighting the extraction of tar sands from their ancestral lands in the boreal forest of Alberta because of the damage it is doing to their environment. The Beaver Lake Cree claim the strip …