[KarlInOhio]

How does pollution prevent water from freezing?

Various chemicals change the freezing point. Salt or alcohol will drop it which is why road salt and antifreeze work.

When will all the Muzzies declare that ice skating is not allowed by the Koran and declare a fatwa.

[Pikachu_Dad]

Add any Ion to water and you will get a...
... Boiling point elevation
... Freezing point depression

So if they had salt water in their canals, that would lower the freezing point.

..... DT = i Kb m