Secret advice to politicians: oilsands emissions hard to scrub

Now, here's a big surprise:

Secret advice to politicians: oilsands emissions hard to scrub

CBC News has obtained a government document that says reducing greenhouse gases from Western Canada's oilsands will be much more difficult than some politicians and the industry suggest.

The ministerial briefing notes, initially marked "Secret," say that just a small percentage of the carbon dioxide released in mining the sands and producing fuel from them can be captured.