From Washington Post, Scientists have speculated that factors beyond deliberate dumping could be at play. The mercury could have settled in the river’s sedimen

From Washington Post, Scientists have speculated that factors beyond deliberate dumping could be at play. The mercury could have settled in the river’s sediment because of past pollution, before being stirred up by recent dredging. Europe’s historic heat wave this summer could also be to blame. The continent is facing what is potentially its worst drought in 500 years; low water levels and high temperatures could be choking off oxygen supplies to the river’s aquatic life and worsening existing pollution. https://www.washingtonpost.com/world/2022/08/13/poland-oder-river-mercury-fish/ https://www.washingtonpost.com/world/2022/08/13/poland-oder-... BTW, article is viewable on Chrome with scripting turned off (NoScript).