During a conversation at the weekend, and for reasons which I can't now remember, the subject of Tom Lehrer's song "The Elements" came up. For those of you who haven't come across it, this is a (slightly comic) song about all of the elements of the periodic table (or at least those known in 1959). If you have come across it, this will probably take you back to your schooldays:
In case you're wondering where you've heard the title of this post before, I point you in the direction of Jennifer Aniston. Because you're worth it.