Re: Liquid Metal
Glass isn't fragile because of it's amorphous structure, it's fragile because there is very little bond strength between particles.
Metals are a lot stronger than glass because they have a lot stronger bond structure, but actually crystalline metal is more brittle than amorphous metal. A crystal structure has specific weak points where the material can fail if hid hard enough in just the right point / just the right angle, while amorphous metal structure doesn't have these failure points and is a lot stronger. (I'm not sure of the exact mechanics, but I would speculate that this is especially true at colder temperatures where metals are more brittle)
Incidentally amorphous metal is nothing new, been known about since the 70s I think, what Liquidmetal(TM) has done is found a technique to injection-mold it cheaply.
As a phone casing - well I doubt that a typical phone gets that much abuse that would justify using Liquidmetal over normal metal simply to boast that it's using a fancy material, but if Apple can use Liquidmetal to build a casing that's thinner and lighter wit teh same strength and use that to fit in a slightly bigger battery it would be a win