A swath of freezing fog blanketed Salt Lake City on the morning of January 6, 2011, mixing with a weeklong coating of heavy gray smog.

With a temperature of -8°C, what was reported as fog should have been reported, in the current weather reporting system, as freezing fog.

Freezing fog blanketed Salt Lake City on the morning of ­January 6, 2011, mixing with heavy grey smog.

The smart road has helped drivers to tackle issues including freezing fog and extreme temperatures.

That said, other than the customary netting around visitors sections in Europe, and the freezing fog the view was good.

The cryogenic fluid will form an ice fog which will be rapidly and uniformly distributed throughout the freezing chamber and into the vials present in the freezing chamber.

A rare ice fog enveloped China’s northernmost city of Mohe, with the temperature dropping to minus 42.7 degrees Celsius and even to minus 43.5 degrees in a village.

Rare ice fog enveloped China's northern-most city of Mohe, with the temperature dropping to -42.7℃.

A rare ice fog enveloped China’s northernmost city of Mohe, with the temperature dropping to minus 42.7 degrees Celsius and even to minus 43.5 degrees in a village.