[acsowerby]

Incorrect science in explanation of "normal" ice:

>Water is a simple molecule — two hydrogens attached to one oxygen. The three atoms normally form a V-shape. In the usual ice found on Earth, the Vs connect in an airy structure. (That is why water, unlike most every other substance, expands when it freezes.)

Not quite, the "airy structure" (overlooking the fact that there is no air between the molecules) is caused by hydrogen bonding, not the V shape.