Bill Nye “The Science Guy” is scheduled to speak at an event in Madison this spring where climate change will be the topic.  Nye is a “scientist” and former television host who will appear as part of the Wisconsin Union Directorate’s Distinguished Lecture Series April 21st.  Organizers say the lecture and following question-and-answer session are open to students and the public.  There will be no admission charge, but those attending will need to obtain a free general admission ticket to get in.