The presentations of two speakers at the Dan Leckie Forum in 2015 are summarized in this document: Marcus Williams, the Model Analyst at whatIf? Technologies Inc. and Charles Heaps, the Senior Scientist at the Stockholm Environment Institute. Marcus Williams presented on “Places + Spaces Project, Community Sustainability Model.” Charley Heaps presented on “Long-range Energy Alternatives Planning System (LEAP) Software, City of Seattle Project.”