How science has shaped our approach to parenting and education over the last 50 years.
Teenagers Kaya and Jay travel to Oklahoma to spend a week with the White family.
Teenagers Debbie and Daniel travel to Lebanon to spend a week with the Hajjar family.
Teenagers Gemma and Jack travel to Israel for a week with the religious Schechet family.
Teenagers Hannah and James travel to Utah to live with the God-fearing Peck family.
A binge drinker and a college drop-out spend a week with a middle-class Botswana family.
Peter and Jocelyn Harris spend a week with the Unnikrishnan family in Pune, India.
Bex and Chezden spend a week with the God-fearing Kimbroughs in Atlanta, Georgia.
Catch up with the teens and find out if their lives have changed since their return home.