There have been many fish deaths in the Polish-German border river. The natural disaster strained the relationship between Germany and Poland. Scientists from both countries have strong opinions about how the disaster happened.
Dead fish in the Polish-German Oder river.
On Friday, a new theory about the possible causes of fish deaths in the Polish-German Oder river received a lot of attention. Polish scientists have discovered a small virus called golden algae that may be the cause of the disaster. This was announced by the Minister of Environment of Poland Anna Moskwa via Twitter.