Crack this secret code

chicagotribune.com — The enigma began last year when a plain envelope with no return address arrived at the world-famous physics laboratory outside Chicago, addressed simply to "Fermilab." Inside was a single sheet marked by pen with a bizarre series of hash marks, numbers and alien-looking symbols. No one knew what it was. A joke? A threat? So they posted it online... Jul 11, 2008 View in Crawl 4