(DIR) xkcd - A Webcomic of Romance, Sarcasm, Math and Language.
 (DIR) Floodgap Gopher Fun and Games
        
       xkcd - A Webcomic - Data Error (2239)
        
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       Cyanobacteria wiped out nearly all life on Earth once before, and
       they can do it again!
        
       Comics reproduced from www.xkcd.com under license.
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