Reuters.  While we dislike seeing the demise of any gas pipeline project before a gas line is under way, the silver lining here is that Denali's announcement frees ConocoPhillips and BP to independently become partners in another Alaska gas line project.   Canada.com by Mike De Souza.  Canada's federal energy regulator is defending its decision to keep Canadians in the dark about safety concerns with two major oil and gas pipelines. The concerns prompted the regulator to order pressure reductions on both lines last October, which are still in effect today. [...]