Calgary Herald: For all the criticism environmentalists have heaped on Alberta’s climate change program, the goals the province has set to reduce greenhouse gas emissions will be extremely diffi cult and expensive to meet, says a University of Alberta researcher. Andrew Leach, an assistant professor and researcher in energy and environment economics, says the Stelmach government’s plan to capture and store 50 million tonnes of carbon annually by 2020 and 139 million tonnes annually by 2050 without …