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.
Teodorus of Cyrene, was a great mathematician of the 5th century BC. Born in Greece in Cyrene, Theodorus moved to Athens, where he spent most of his life. Little is known about Theodorusâs family! Theodorus of Cyrene was a Mathematician but also a tutor he teached Plato and Theatus. He was distinguished in astronomy, arithmetic, music and educational subjects. He was even one of the main Philosophers in the Cyrenaic school of moral philosophy.