Dead fish and depression on the banks of the Oder

Appearing tired and stressed, Piotr Wloch looks out dejectedly at his empty tourist boats on the Oder river after an environmental disaster that has killed thousands of fish.

Lakes worldwide are experiencing more severe algal blooms

The intensity of summer algal blooms has increased over the past three decades, according to a first-ever global survey of dozens of large, freshwater lakes, which was conducted by Carnegie's Jeff Ho and Anna Michalak and ...

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