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 ...

NY state approves constitutional right to clean environment

The New York state constitution will be amended to say people have the right to clean air and water and a healthy environment, after voters said yes to the measure in a referendum that was part of local elections on Tuesday.

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