Microplastics could make other pollutants more harmful

Microplastics—small plastic pieces less than five millimeters in length—are becoming a ubiquitous ecological contaminant. Studies suggest that on their own, these tiny bits are potentially harmful, and it's unclear what ...

What killed tons of fish in European river? Mystery deepens

Laboratory tests following a mass die-off of fish in the Oder River detected high levels of salinity but no mercury poisoning its waters, Poland's environment minister said Saturday as the mystery continued as to what killed ...

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