Focus on tar sands
We hear a lot about “Athabascan oil sands”, “bituminous sands” and other “tar sands”… Although we’re following the news closely, it can sometimes be difficult to define those obscure terms. To sum up, tar sand is a mixture of sand, water and mineral clay, a petroleum concentrate. In other words, the sand is covered in a layer of water where the bitumen film settles. The main reserves of tar sand are located in Canada, in the open-cast mines of Alberta. Exploiting those mines is extremely expensive and polluting: this synthetic form of petroleum produces three times more greenhouse gases than “traditional” hydrocarbons. Underground waters as well as rivers and lakes are contaminated because of how close the watering places are from the mining sites. Razed forests, destroyed grounds, acid rain, harmful gases, high risks of contracting cancer: Alberta is now the capital of air pollution. NGOs call it an ecological disaster, denounce the “shame of Canada”, whereas entrepreneurs forecast heavy economic consequences on the whole country if production should slow down. Soon enough, the state will have to wonder: should the economy of a country prevail over the preservation of its ecosystem?
To learn more: “Tar Sands: Dirty Oil And The Future Of A Continent” by Andrew Nikiforuk, Greystone Books



Photo credit: 













