Economy Science What Killed Tons of Fish in a European River? No Answer Yet By Yscien on Saturday, August 13, 2022 Poland’s environment minister says laboratory tests following a mass fish die-off have detected high salinity levels but no mercury in the Oder River. That means the mystery is continuing as to what killed tons of fish in Central Europe. … TelegramWhatsAppPinterestFacebookMastodonNextdoorX Related Previous Post Next Post Related Posts Economy Science NASA’s Parker Solar Probe aims to fly closer to the sun like never before Economy In a calendar rarity, Hanukkah starts this year on Christmas Day Economy Custom clocks designed for Pennsylvania’s Capitol a century ago still ticking