“Investigating the Exposome: Vinyl Chloride Exposure, DNA Damage & Repair” is a data interpretation and graphing activity that provides students a relevant context in which to explore and refine what they know about DNA structure and function, mutation, DNA repair, and cancer formation. The activity utilizes published scientific data and invites students to assess the impact of exposure to vinyl chloride on DNA in an effort to introduce them to the concept of the exposome and engage them in this exciting field of scientific research.