Please accept my sincere condolences. I am one of those countless students Chuck taught. I was a graduate student in UNL and knew him quite well. A sharp brained, witty, and thoughtful person he was. He loved chemistry and his favorite molecule was ethanol ! Every week, he poured libations to the angry rain goddess in the summer ( Every one in the department got an email from him on fridays and he bought the first round of beers). Also we all saw him as a gardener where he exchanged plants with his colleagues. He rode a bicycle every day. I took a graduate level course with him. He announced that every one will get an A grade in the course and in exchange, he wanted us to tell a dirty joke. He did not hesitate to comment the joke was ” not dirty enough” if it was a bit modest. I was also a teaching assistant for his class and at the end of the grading session, he would slip in a check for $ 20 ( Max limit UNL allowed at that time) as a token of appreciation. These are the memories that I will carry for ever. I will miss him . May his soul rest in peace.