Cleaning up after a major oil spill is a long, expensive process, and the damage to a coastal region's ecosystem can be significant. This is especially true for the world's Arctic region, where newly opened sea lanes will expose remote shorelines to increased risks due to an anticipated rise in sea traffic.

The Pa. Department of Environmental Protection was able to contain and cleanup an oil spill from a steel mill in Lower Burrell, but one environmental group still has concerns. KDKA's Chris DeRose has the story.