Ice is full of surprises, and we’re not talking about that slick patch you don’t notice until it’s too late. Water’s solid state can take some wild forms. There is delicate, rare, short-lived hair ice, which is sometimes mistaken for wads of wet toilet paper. The frozen Frisbees known as pancake ice are much more common, particularly in polar regions and the Great Lakes, but they’re not actually as flat as a, well, you know. Each thin piece has a raised edge of slush that builds up as it bumps…
