I've heard a lot of good things about the field of materials science, and the work being done seems really cool to me. But I'm wondering what a working materials scientist actually does. Does it use a lot of math and physics? Is it mostly lab work? Is it more qualitative? The reason I ask is that I've been looking at some of the assignments handed out in materials science classes at my school, and they seem to involve very little math and frankly seem quite "fluffy" to me. I want a job that will be intellectually challenging.