All this winter my wife and I have been keeping water bottles on the window sill, (I live south-west of toronto so it can get really cold at night). It often su

All this winter my wife and I have been keeping water bottles on the window sill, (I live south-west of toronto so it can get really cold at night). It often supercooled, it's really cool to see crystallization happen right in front of your eyes. (Ed: I've only ever seen supercooling once in the freezer, but I saw it almost every single night during winter, you can even drink from the bottle before it begins to crystallize. If only the same could be done with beer.) I've avoided putting sodas on my window sill because I've had a few explode when I've stuck them in the freezer in the summer to get them ice cold. When my head is less than 2 feet away I don't want one of them exploding, if only because I don't want to strip my bed sheets at 3am. I doubt one would ever be capable of hurting someone as they always seem to split in the side.