An international environmental watchdog says there's convincing evidence that oilsands tailings ponds are leaking.

Imperial Oil Ltd. is reporting the deaths of 50 birds that landed on tailings areas near its Kearl oilsands project in northern Alberta.

It says it must present a research plan for its water-capping technology by September 2023.

The Alberta Energy Regulator has approved a tailings pond management plan for oilsands miner Syncrude Canada despite its reliance on a remediation method that isn't endorsed by the agency.

The Alberta Energy Regulator says it has approved tailings pond management plans for two former Shell Canada oilsands mines in northern Alberta.

The Canadian government has provided a response to a call from the environmental arm of NAFTA to explain what Canada is doing to stop oilsands tailings ponds from leaking into Alberta waterways.

Alberta's energy regulator has approved an oilsands giant's plan to manage its vast tailings ponds.

Alberta's oilsands could be heading for another showdown over tailings ponds after an independent assessment found that the cleanup plans of six major operators don't meet new rules.

The Alberta Energy Regulator has rejected an oilsands tailings pond retirement plan submitted by Suncor Energy.

New requirements issued by the Alberta Energy Regulator target oilsands tailings ponds, requiring that they be ready to reclaim within 10 years of the end of a mine's life.