Professor destroys laptop with liquid nitrogen
Physics professor Kieran Mullen of OU apparently has a hard-and-fast rule against laptops in class. To drive the point home, he staged a public execution of one by freezing it in liquid nitrogen and smashing it against the floor, where its broken remains were left as a warning to others. Of course the whole thing is staged and the laptop in question was old and worthless, but hey, any excuse to freeze stuff with LN2 is OK with me.