Berlin — A river on the German-Polish border has become a mass grave. Volunteers and authorities have been busy for days removing tons of dead fish floating on the surface of the Oder River. The cause ...

In the summer of 2022, toxins produced by the brackish-water algae Prymnesium parvum killed about 1,000 metric tons of fish, snails, and mussels in the River Oder. In a study published in the journal ...

Poland's River Oder suffered an ecological catastrophe last year. Germany’s Emscher might hold some clues for its recovery. Clear water splashing over stones. Deep pools in the river bends. Fish ...

Hundreds of fish corpses have been found in Oder-connected canals in Poland, sparking fear of the recurrence of last year's ecological disaster in the German-Polish river. Recent fish deaths in canals ...

An algal bloom that killed hundreds of thousands of fish in the river Oder between Germany and Poland in 2022 could reappear this summer with devastating consequences, scientists have warned. About ...

Despite bureaucratic and financial challenges, environmentalists in Germany and Poland are joining forces to protect the biodiverse Oder River ecosystem. Stefanie and Norbert Bartel's farm in eastern ...

The Oder River forms the natural border between Germany and Poland over a distance of 187 kilometers (116 miles). Despite common goals, German and Polish activists struggle to collaborate. Stefanie ...