Earth-based Applications of Research Project Depression is widespread, and effective treatments are not available to all persons who have it. This computer-based depression treatment, with simple modifications and revisions, could be adapted for use in other isolated, operational environments, such as polar research stations, submarines, commercial ships, oil rigs and underwater research facilities. Furthermore, even greater value could be derived by making similar psychosocial support systems available to the public in settings such as primary care practices, public and mental health centers, schools, social services offices, places of worship, military bases, prisons, and eventually at home or in any location, through broadband Internet.