Alberta's oil sands may be home the world's third largest oil reserves after Venezuela and Saudi Arabia, but that hasn't stopped it working to strengthen its clean energy credentials. And it is turning to microscopic bacteria for help.
At the end of last year, the government of Alberta committed to a host of green policies. These include cutting greenhouse gas emissions from coal-fired electricity to zero by 2030, and diversifying its supply mix by replacing retired coal with "at least two-thirds renewable energy sources."
At the moment, however, oil remains a key part of the world's – and Alberta's – energy mix. At the University of Calgary, bright minds are looking to develop ideas and technologies that will help to mitigate the environmental impact of fossil fuels.
"It's really important to focus on technologies and engineering interventions for the oil and gas sector so that our remaining use of these fossil fuel energy resources will roll out as responsibly and sustainably as possible in the years ahead," Casey Hubert, from the University of Calgary's Geomicrobiology Group, told CNBC's Sustainable Energy.