Greenhouse gas emissions are an abstract concept for most people. Ask a sample of Canadians what Canada’s annual GHG emissions are, and you’ll likely get a very broad range of answers (they’re about 750 million metric tons (Mt) per year).
The figures are so abstract that errors like Gasland producer Josh Fox claiming that Canada’s oilsands emit 36 Mt of GHGs per day go unnoticed by many – likely because they don’t have the context to catch the mistake rather than because they don’t care about the exaggeration. If you’re one of those people who didn’t catch the error, 36 Mt per day is about half of the world’s total GHG emissions, while oilsands emissions are about 40 Mt per year.
I am guilty of this abstraction myself – I deal in megatons all the time, whether it’s talking about carbon capture and storage, oilsands, or just about anything else I do – and I don’t often stop to think about the scale of those numbers. I decided to do something about this, using the example of Keystone XL.