A truely great and informative book. It’s so sad that one country, Canada, portrays itself as a natural and outdoorsy, environmental country but actually is responsible for half of the US oil supply resulting in billions of tons of CO2 in our atmosphere! Not only does Alberta supply 1 x very large crude carrier ship PER DAY but it also burns 1 million cubic feet it natural gas PER HOUR to extract the oil from the tar sands. The Canadian’s deserve everything they get. You make your bed and then you lie in it!