Poland investigates ‘ecological catastrophe’ of fish die-off

Poland has deployed soldiers to help clean up the Oder River, which runs along the border with Germany, after 10 tons of dead fish surfaced from the waterway in what one official described as an “ecological catastrophe.”
An association of fishers in Zielona Gora, a city in Western Poland, said Friday that it was suspending fishing in the river due to still-unconfirmed reports in the German media saying the river could be contaminated with mercury.
Investigations are underway to determine the cause of the mass die-off of fish. Huge numbers of dead fish were first spotted near the southwestern Polish town of Olawa in late July, along with animals such as beavers.