Low oxygen areas are disappearing almost a month earlier than they did 30 years ago.
Nationwide study shows how manufacturing facilities can increase levels of medical compounds in waterways.
The 5.4 magnitude earthquake suggests that even small volumes of water can trigger large events.
Ambitious plan aims to keep waste out of rivers without massive new pipes.
Fish expend energy metabolizing drugs and personal products in fresh water.
People who eat fish from glacial meltwater may be at risk from persistent organic pollutants produced in the 20th century.