Ocean Dead Zone Off Oregon Dissipating

This year's dead zone off Oregon ran for 17 weeks, compared to the previous high of six weeks in 2004, and saw oxygen readings near zero that left the ocean bottom littered with dead crabs, sea stars and sea anemones. This is the fifth straight year the dead zone returned. It covered 70 miles of the central Oregon Coast and there are indications a dead zone also formed off southern Washington...