Hi all, I have a question. Does naturally occurring radiation (similar to nuclear waste radiation) occur naturally anywhere in the earth's crust ?? I've been trying to research this on the www but there's not much information pertaining to this, so I thought I'd put this question out there. It's just that, as Australia is looking at the option of nuclear power, the idea of waste disposal could more easily be understood if people understand that the crust does _already_ contain radioactivity, it's just that we don't really want to touch any of it. CHeers..