Uncertain Principles

I just realized that my friend and college classmate Chad's brilliant blog Uncertain Principles is not on my blogroll. It used to be on the blogroll of my old blog and then I changed blogs and he changed servers, and well, you know the age-old story. Chad is a physicist at Union College and is a really sharp guy with a range of interests. He's back on the blogroll and I promise you he is worth a daily read.