The air sparkles with ice crystals - it's quite beautiful. Just don't breath too deeply. Caribou chased by wolves freeze their lungs.The coldest we've seen here was in the 1990's -56C. Bit of arctic air sweeping down. Only 2 of us showed up for day shift out of about 35 people. No one else got their cars or trucks running. I was running a Chevy Blaser Diesel at the time. It was plugged in to the block heater, but it took a blast of ether to get her fired up and running.