OK, here is a really trivial question, but it puzzles me nonetheless; about 40% of the time, my refridgerator freezer will produce an ice cube with a "spike" protruding from the top about 3/4".
It is quite thin, about as thick as a car key, but round in cross section. What does this? Something in the water? Airflow in the freezer? Aliens? If anyone has a theory, I'd like to hear it.