Elemental

The best blogs are the ones with strange ideas.  This one is about blogging the Periodic Table of Elements. 
This blog is great because it gives so many interesting facts about things.  For example, did you know Lewis and Clark traveled with mercury-laced tablets?  They were used to help track down where Lewis and Clark had stayed on their expedition.  That antimony was studied by Newton in an attempt to make gold?  That a form of that same element was used by Egyptian women as eyeliner? 
The only thing that troubled me was that the author mentioned that he used to play with mercury, which struck me as one of the unsafe things to do.  When I was in high school, someone broke a massive barometer in my chemistry lab, and we were out for days and someone cleaned it all up. 
The author also has a really cool looking book about it called The Disappearing Spoon.