SCIENCEGEEK ADVENT CALENDAR EXTRAVAGANZA! (DAY 16) by the grace of all that is good about science A SANTA CLAUS AS INTRUDER ALERT SYSTEM (By Thomas Cane) (See previous day) Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on Reddit (Opens in new window) 12.16.2013 – special