Identical Strangers

What is it that makes us...us? DNA or life experience? Genes or environment? Paula Bernstein and Elyse Schein share 100 percent of their DNA. Separated at birth, the twins were both adopted and raised by loving families. They met for the first time at the age of 35, and discovered that they had been part of a unique research study on the 'Nature vs. Nurture' question.