Skin cancer is the most common form of cancer in the United States with one million cases diagnosed each year. Xeroderma Pigmentosum (XP) is a rare genetic condition that makes skin cancer a very real threat. It is an extremely rare disease which affects one in a million American children. In a remote village in Guatemala, 26 cases of XP have been diagnosed. San Diego dermatologist, Dr. Bari Cunningham, organized a team of health workers to travel to Guatemala to help. Their experience was made in to a documentary, Hidden From Light, which tells the story of a group of kids whose DNA could help change how skin cancer is treated.