In reference to yesterday's cake post, try doing an image search for "cube of butter" and see just what random stuff shows up. In the first set of photos, I saw everything including a picture of a snake.
Dad sent me an interesting article out of the February 08 edition of Physics Today. (abstract) In it, Mark Wilson summarizes the work that Thorsten Kleine and Mathieu Touboul have done to date the lunar mantle via the hafnium-tungsten system. ( cut to spare the non-geeks )