Kurlansky's SALT, has kept my attention, and as a foodie I have a new admiration for the stuff and what someone had to go thru to mine this substance--history and today. I've just started being interested in colors of salt and now am spurred on to find the unusual...more than just grey salt. Thank you Kurlansky for giving us something to learn and not just car chases. A good read and an excellent economics lesson.