Please note, this article is a year old but still very relevant. – RepublicOfMining.com.
If you remained in Alberta during the first major cold snap of the year and are alive to read this article, you owe your continued existence to fossil fuels; coal, oil and natural gas.
Using Red Deer as an example, from January 12 to 18 the average daytime high was -25.9oC and the nighttime low -34.7oC. It was a bit warmer in the south and colder in the north, but high/low ranges for the entire province were similar.
Without heat from carbon-based plants and animals – either long dead in the form of coal, oil or gas or not yet fossilized wood or grass – we’d all have frozen to death.