North American Scientists Call for End to Tar Sands Mining Adan Posted on June 12, 2015 Posted in Aggregated No Comments Tagged with Global Crisis More than 100 US and Canadian scientists publish letter saying tar sands crude should be relegated to fuel of last resort, because it causes so much pollution. Share this:Share Share on Facebook (Opens in new window) Facebook Share on Reddit (Opens in new window) Reddit Share on X (Opens in new window) X Share on LinkedIn (Opens in new window) LinkedIn Email a link to a friend (Opens in new window) Email