This week on Exposure, Michael spoke with Dennis Martell, head of student health education here at Michigan State University. Health is such a broad topic yet it is so important. In this episode, Dennis elaborates on some of the most important issues of college life: stress, sex and pregnancy prevention, alcohol and tobacco use, mental health and nutrition. On The Sci-Files, Chelsie and Danny talk with Dianna Cowern, who publishes videos on YouTube as the personality Physics Girl.