A plan by oilsands giant Suncor to mine part of a northern Alberta wetland has been criticized by scientists and environmentalists. But CBC News has learned that some of the company's own advisory committee members have also flagged concerns about the project.
TC Energy Inc. has filed a formal request for arbitration under NAFTA rules, seeking compensation from the U.S. government for the money it spent on trying to develop the cancelled Keystone XL pipeline.