CBC by FP.  A major stumbling block in the decades-long effort to build the $16.2-billion Mackenzie Valley natural gas pipeline could be cleared at the end of this month.  “We’re told the Joint Review Panel will be releasing its report at the end of this month, on December 31,” Bob McLeod (NGP Photo), the Northwest Territories' Minister of Industry, Tourism and Investment, said in an interview in Calgary Tuesday.   *   Green Life.   A panel examining the social and environmental effects of a delayed Arctic natural gas pipeline is expected to meet [...]