(DIR) xkcd - A Webcomic of Romance, Sarcasm, Math and Language.
 (DIR) Floodgap Gopher Fun and Games
        
       xkcd - A Webcomic - Hydrothermal Vents (2872)
        
       Image:
 (PNG) hydrothermal_vents.png
        
       Benthic Santas weren't even discovered until the 1970s, but many
       scientists now believe Christmas may have originally developed
       around hydrothermal vents and only later migrated to the surface.
        
       Comics reproduced from www.xkcd.com under license.
 (HTM) xkcd License (WWW)
 (HTM) xkcd Web Site (WWW)
        
       Previous:
 (DIR) xkcd - A Webcomic - Definitely (2871)
       Next:
 (DIR) xkcd - A Webcomic - Supersymmetry (2873)