American companies don't want tar-sands oil on their logos, creating an opening | Grist
Extreme oil: Scraping the bottom of Earth's barrel | New Scientist
Chart: The World's Biggest Oil Producers | Statista
Pine Tar; History And Uses
Global oil production by country 2021 | Statista
Everything you need to know about the tar sands and how they impact you - Greenpeace Canada
Canada's Oil Sands Exports to Asia Reach Record With New Link - Bloomberg
Coal Tar Oil | OEC - The Observatory of Economic Complexity
Higher Power - Alberta's Oil Sands Production Setting Up for Another Record Year in 2022 | RBN Energy
What are tar sands? | American Geosciences Institute
Alberta Tar Sands | gogel
Why Does Green California Pump the Dirtiest Oil in the U.S.? - Yale E360
Canada's oil sands: why some of the world's dirtiest fuel is now in hot demand | Financial Times
Heavy oil and tar sand - World distribution of heavy oils and tar sands | Britannica
Which are the World's Largest Trade Areas of Coal Tar Oil?
Tar - Wikipedia
What Are Tar Sands? | Union of Concerned Scientists
The Deep Toll of Tar Sands On Canada's Indigenous People
Visualizing the World's Largest Oil Producers
Heavy oil and tar sand - World distribution of heavy oils and tar sands | Britannica
Unexamined risks from tar sands oil may threaten oceans | Stanford News
Shell to take $2bn charge to shelve Alberta oil sands project
Why tar sands and shale won't solve the peak oil problem – The Earthbound Report
Canada's oil sands industry is taking a big hit » Yale Climate Connections
How Things Work: Canada's Oil Sands - Our World
