In episode 4, we explore the daylight in the urban context of big cities and the backlash that happens when we build tall buildings in close proximity.  The urban realm at ground level is compromised and the effects are felt for generations.  New York has progressively tried to provide planning regulations to limit the effect of daylight at ground level and the story of New York involves those who wish to see development thrive and those who want to see the public realm retained as a livable healthy place for people to thrive.