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.
In Oration 36 (the Borysthenean), he even employed an eschatological myth that he claimed to be Persian, and indeed has certain traits in common with what we know about ancient Zoroastrianism. Dio has always been admired for these speeches, and was called Chrysostom, goldvoice. However, in the second century, people increasingly felt that philosophy (i.e., searching for what is true) and sophistry (i.e., searching for what is convincing) were incompatible, and they felt uneasy with Dio.