What is a polar molecule
A polar molecule refers to a molecule, which has positive charge on one side and a negative charge on the other side. Read more on http://www.daviddarling.info/encyclopedia/P/polarmol.html.
A cold molecule
Well it has a positive end and a negative end because of electronegativity. Basically it has two opposite charges. :) Read your chemistry book. Hope it helps!
A really small item that occurs at 90 degrees north latitude.