Using geographic information systems for exposure assessment in environmental epidemiology studies The Web site also includes links to curriculum projects, guides to getting started with GIS, and information on software (ESRI's ArcVoyager Special Edition is free) used to bring GIS to schools. High-tech maps: how to get here from there.
John Chrysostom. John Chrysostom (347 - 407) was a notable Christian bishop and preacher from the 4th and 5th centuries in Syria and Constantinople. He is famous for eloquence in public speaking and his denunciation of abuse of authority in the Church and in the Roman Empire of the time.
John Chrysostom confronting Aelia Eudoxia, in a 19th-century painting by Jean-Paul Laurens. For more details on this topic, see Meletian schism. John was ordained as a deacon in 381 by Saint Meletius of Antioch who was not then in communion with Alexandria and Rome. After the death of Meletius, John separated himself from the followers of Meletius, without joining Paulinus, the rival of Meletius for the bishopric of Antioch.