Grist: After its hopes of cutting an enormous tar-sands oil pipeline across North America were dashed by anti-Keystone activists, TransCanada has moved on to something new: buying the Houston-based Columbia Pipeline Group, Inc. (CPG), a large natural gas pipeline company. The move will not improve TransCanadas poor environmental reputation, as CPG has a troubled environmental history of its own.
On Thursday, The New York Times reported that TransCanada, Canadas second-largest pipeline operator, said...