Can icicles grow?
Icicles cannot grow in the sense that they are living. As water runs down to the tip of the icicle it freezes which makes the icicle appear to grow. It gets longer as more water runs down it and freezes. If there is no water to run down the icicle, even though it is below freezing it will actually shrink. Ice evaporates but at a slower rate than warmer water. Leave some ice cubes in your freezer and over time you will notice them shrink. It takes a while though.
