University of Colorado faculty Elizabeth Guertin gives testimony about how the 4/20 event has negatively affected her work and students studies during the hearing for the 4/20 closure of the Norlin ... more 
University of Colorado faculty Elizabeth Guertin gives testimony about how the 4/20 event has negatively affected her work and students studies during the hearing for the 4/20 closure of the Norlin Quad on the University of Colorado campus at the Boulder County Justice Center on Thursday, April 19, 2012, in Boulder, Colo. A judge says the University of Colorado-Boulder can close its grounds to unauthorized visitors Friday, as administrators try to stifle an unsanctioned annual campus celebration of marijuana. (AP Photo/The Daily Camera, Jeremy Papasso, Pool) less 
1 / 24
Associated Press | Photo By The Daily Camera, Jeremy Papasso, Pool
Fri, Apr 20, 2012 4:21 AM EDT