By the Editorial Board, Pittsburgh Post-Gazette
During the past two winters, the Great Lakes have been covered with more and denser ice than at any time since the 1970s. Vessels have gotten stuck and damaged, precious and timely cargo has been delayed, and money and jobs have been lost — even in Lake Erie, along the Pennsylvania shore.
http://www.post-gazette.com/opinion/editorials/2015/08/17/Frozen-commerce-Great-Lakes-businesses-need-a-new-icebreaker/stories/201508160117