Because of human activity, the phosphosphorus "cycle" becomes more like a one way dead end. The heavy use of fertilizer, and the runoff of phosphorus in particular, has caused a major issue in ...

Data from the United States Geological Survey (USGS), an integral element in predicting the annual size of the dead zone, found that the phosphorus load was up 31% but nitrate loads were about 24% ...

The dead zone occurs in the Saanich Inlet between January and September, until fall rains cause water to flow over its sill replenishing the oxygen supply and marine life returns.

New research on the cost of reducing the dead zone in the Gulf of Mexico places a $7 billion dollar annual price tag on reaching the Environmental Protection Agency's goals.