I saw a cool experiment that explained the phenomena of needle ice on The Weather Channel tonight, the program Weird Weather. The woman used plain white chalk with a line draw around it in marker. She then placed them in a shallow bath of rubbing alcohol. The color of course spread up the chalk, illustrating the same principle present in the formation of needle ice.
There was also a segment about pancake ice, which is really cool looking.
Oh yes, I'm having twins. Totally random.