As I've noted before, the ladder of (peer-reviewed) science knows a top and a bottom.
And the journal Nature is right at the top of said ladder.
Here is the lede of the actual abstract (no MSM filter required) from one of the latest articles published in said journal that was written by scientists at Environment and Climate Change Canada, the University of Calgary and Yale University:
Worldwide heavy oil and bitumen deposits amount to 9 trillion barrels of oil distributed in over 280 basins around the world1, with Canada home to oil sands deposits of 1.7 trillion barrels2. The global development of this resource and the increase in oil production from oil sands has caused environmental concerns over the presence of toxic compounds in nearby ecosystems3, 4 and acid deposition5, 6. The contribution of oil sands exploration to secondary organic aerosol formation, an important component of atmospheric particulate matter that affects air quality and climate7, remains poorly understood. Here we use data from airborne measurements over the Canadian oil sands, laboratory experiments and a box-model study to provide a quantitative assessment of the magnitude of secondary organic aerosol production from oil sands emissions. We find that the evaporation and atmospheric oxidation of low-volatility organic vapours from the mined oil sands material is directly responsible for the majority of the observed secondary organic aerosol mass. The resultant production rates of 45–84 tonnes per day make the oil sands one of the largest sources of anthropogenic secondary organic aerosols in North America...
And, as an aside, it is interesting to note that the paper was first submitted (i.e. 'received' by the journal on November 9, 2015 which is just a couple of weeks after....Well...You know...