New research suggests that ancient polar bear populations shrank as sea ice dwindled, adding weight to concerns about the predator's future as climate change melts the Arctic.

"Aseniwuche Winewak calls on Parks Canada to immediately enter into negotiations … restore our access to the park and to prioritize our involvement in the co-management of Jasper both as the park’s current neighbouring Indigenous Peoples and its former inhabitants," said a letter from the band to Jasper National Park superintendent Alan Fehr.

A renewable energy windfall of nearly $300 million for the Alberta government should be used to expand the industry and help low-income people pay power bills, say the provincial New Democrats.

The regulator says the move would reward companies that remediate their old sites promptly, cutting the amount of environmental red ink on their books and making it easier for them to sell or buy old wells.

In a decision released this morning, five out of seven judges found most of the Impact Assessment Act to be unconstitutional because it ultimately seeks to regulate activities within provincial jurisdiction.

Calgary MP George Chahal said Wednesday that Smith is spreading misinformation about the federal Liberal government's plans to bring Canada's electricity grid to net-zero. 

Imperial said in a statement that seepage was anticipated in Kearl's original design.

A poll released on Thursday suggests nearly two-thirds of Albertans oppose the provincial government's moratorium on approvals for new renewable energy projects.

On Wednesday, the Alberta Utilities Commission released a series of interim information requests that those proposing new projects will be required to answer.

New documents outline a massive increase in public funding for the Canadian Energy Centre's campaign to change attitudes toward Alberta's oil and gas.