In this adventure as a dad  set out to  bring home  one leaf from  a tree in Peter’s Park.  Introducing  myself to strangers, my daughter and I asked MBTA riders seated beside us 1)  their destination, and 2) one thing on their mind or heart .     Polling Commuters Emad left his  nineteen-month-old  and rode the orange line to Northeastern University where he is  teaching 20 percent and researching   80 percent of the time .   To take this job, focused on renewable energy, attractive because of "the degree of freedom,"  the family had just moved from Phoenix. But they were no stranger to snow, since they formerly lived in Virginia.  Esther, on the way to the dentist wore  black lipstick,  a black leather  top open at the chest  and white midriff . T he  Army  veteran of a foreign war  had been thinking of the state of the world as she rode the escalator from t...