Studio 2 Extra: Philadelphia suburb hosts nation’s largest trash incinerator

After more than two years of fierce debate, the Sixers have abandoned their plans for a downtown arena, surprising many city officials and residents. What's coming up next?

Roughly 70 vehicles disrupted traffic on Market Street to simulate traffic congestion before and after events at the proposed 18,500-seat arena.

Many cities worldwide embrace pedestrian-friendly design and even places around the US are playing with the concept. But what will it take for us to get there?