at Westin Hotel on 9 Dec 2013 – 14 Dec 2013

at Sheraton Gateway Suites O’Hare on 14 May 2013 – 17 May 2013

at Umweltforum Auferstehungskirche on 21 Nov 2012 – 24 Nov 2012

at Cité Universitaire Internationale on 5 Jun 2012 – 9 Jun 2012

at Cité Universitaire Internationale on 2 Mar 2011 – 4 Mar 2011