I am in Philadelphia for PittCon, the largest conference for my field (Analytical Chemistry). I am here to give two talks - one today and one on Wednesday. The talk today went OK I think, it was definitely a lot of fun. Unfortunately, the only day that the weather will be better than rain and snow was today. As you can see in the photos - it still was not that great. As I found my way from the conference back to the hotel I stumbled upon a parade in Chinatown - which was really a pleasent surprise. I also had a famous Philly-cheese steak sandwich!