The US State Department has postponed a decision on TransCanada’s Keystone XL pipeline expansion this week, giving federal agencies involved in a consultation on the project extra time to provide their views. It now plans to complete an environmental impact study and will give federal agencies another 90 days after that to submit comments.

The pipeline will deliver crude from Alberta, Canada, home of the oil sands deposits that make up 95% of Canada’s reserves, which are the second largest in the