In moments of quiet despair following the death of her eldest son in the September 11 attack on The World Trade Center, Vasu Varadhan thought of her mother and father, a United Nations diplomat and champion of nuclear disarmament during the Cold War who died at the early age of 50; her childhood in New York City and young adulthood in India, and her arranged marriage at the age of 16. Circling back into personal family history led to her decision...