How do you design for public space?

Question:
How do you design for public space? How do you make life more integrated? How do you help people realize all of their life is connected, that all decisions matter, that everything from seemingly mundane public transportation to an environmentally sustainable street to why they should buy organic -that it all matters? Through great --thoughtful-- design. Great design considers humanity's interaction with the elements, tasks, places, jobs, buildings etc., that we face everyday.

Source:
Design Trust for Public Space