Heya, i live in the UK and at the moment i'm doing alot of research as to what i want to specialize in in the future. Now i've done quite a bit of reading up on what Geophysics actually is, but i just cant nail the whats its really about. Some places i read its about harnessing the earth's resources such as oil and fuel etc etc. And in some cases, its about monitering natural distasters, how earthquakes, volcanic eruptions and tsunami's come about (which to be honest is more of what i'm looking for :P). So i just wanted to know; what does a geophysicist really do, also, is this course an established course offered by many universities? Thanks!