Standard Trouble

Turns out the most beloved of chemistry constants, Avagadro's Number, may be wrong. I kid you not, I actually gasped when I read this article. Fond memories of using this constant in high school and college suddenly have a gray cast. Have I been using an inaccurate number all these years??? But the scariest part of this article is that there are several labs all over the world dedicated to getting the metric system into absolute atomic quantities. And I thought my job could get a bit dull. This brings to mind the folks who like to argue about pi.