Irrelevant Temperatures

Next Saturday, February 28, I will begin to experience "irrelevant" temperatures on the edge of the Arctic Circle.  I would love it if that meant I didn't have to be concerned about the weather. However, the opposite is true.  My trip briefing describes, "... the wind chill often exceeds -45 degrees C or -50 degrees F and exposed skin will freeze in seconds."

To protect myself from the elements, experts suggest lots of layers. My search for extreme cold weather gear has become a recent hobby for my wife and me.  So far, snagging the new-with-tags $300 North Face parka for $90 on eBay wins for best bargain find.  I will be wearing this over five other layers.  

Ironically, the extreme conditions of Churchill, Manitoba has an "upside".  For example, I won't have to worry about bed bugs biting.  All types of "insect pests" are rare.  The short days and the long nights will allow for prime time viewing of the Aurora Borealis, known as the Northern Lights.

For your first assignment, explain the following:

Zero degrees Celsius equals 32 degrees Fahrenheit. 

So why is -40 degrees Celsius equal to -40 degrees Fahrenheit?