The five companies that own most of the oilsands production in Alberta should come clean with the public about the "enormity" of the costs — adding up to nearly $2 trillion in a worst-case scenario — of their pollution, says a new study.
"The Big Five need to start publicly disclosing their emissions modelling for the sake of transparency and accountability," reads the report, released Wednesday by the Parkland Institute, an Alberta public policy research network based at the University of Alberta.