Question: how many presidents are related to each other?
Answer: The remarkable discovery was made by 12-year-old BridgeAnne d'Avignon, of Salinas, California, who created a ground-breaking family tree that connected 42 of 43 U.S. presidents to one common, and rather unexpected, ancestor: King John of England. 'They all have the trait of wanting power,' d'Avignon told the station.