Genetics
Cawein ended up finally finding the remote family and got to work. In an interview with Science magazine in 1982, Cawein told them what went down. “They were bluer’n hell. Well, as you can imagine, I really examined them. After concluding that there was no evidence of heart disease, I said ‘Aha!’ I started asking them questions: ‘Do you have any relatives who are blue?’ then I sat down and we began to chart the family.”