re: Check out Arthur C. Clarke's cool T-shirt
Online articles relevant to his T-shirt:
http://www.lsi.usp.br/~rbianchi/clarke/ACC.ETRelaysFull.html
http://lakdiva.org/clarke/2005trip/
Beyond The Ionosphere: Fifty Years of Satellite Communication:
http://history.nasa.gov/SP-4217/sp4217.htm
