Thirty-two-year-old John Wood is a surgeon at a famous Boston hospital. "During the first two years of high school,I found biology very difficult.My report cards always said things like 'must try harder' or 'John ought to choose non-science classes.' This was a disaster for someone who had always dreamed of becoming a doctor. I was so discouraged that I dropped out of high school at 16 and started working at a local supermarket.