In the inherently competitive design and construction industries, collaboration can be challenging. However, there are powerful examples of collective impact-- where organizations and networks learn, align, and act together to drive systems-level change. This follow-up to the morning's keynote presentation will showcase inspiring stories from initiatives including Carbon Leadership Forum Regional Hubs, ECHO, Green Commons Peer Networks, Climate Heritage Network, MEP 2040, NESEA Bottom Lines, the Bio-based Materials Collective and more. There will also be opportunity for open discussion about how to engage in this critical work.