http://grassrootsmapping.org/2011/05/playphilly-launches-balloon-in-philadelphia-to-observe-public-space-usage-patterns/ Stories of community based mapping projects Tue, 05 Feb 2013 23:05:05 +0000 hourly 1 https://wordpress.org/?v=4.9.5 http://grassrootsmapping.org/2011/05/playphilly-launches-balloon-in-philadelphia-to-observe-public-space-usage-patterns/comment-page-1/#comment-4046 Tue, 02 Aug 2011 10:46:44 +0000 http://grassrootsmapping.org/?p=865#comment-4046 […] than a one-off project and the apparatus has been used for multiple applications ranging from observing how public space is used in downtown Philadelphia to documenting a recent march for Palestinian independence that took place in Jerusalem – […]

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