Philadelphia wants to ban highly polluting oils burned to heat buildings

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.

The documentary "Trash & Burn" alleges that America's largest trash incinerator is causing Chester's childhood asthma rates to be four times the national average.