UK’s last resident killer whales 'doomed to extinction'

Western European waters are a global hotspot for lingering toxic PCB pollution, research reveals, damaging the reproduction of orcas and dolphins

The UK's last pod of killer whales is doomed to extinction, with new research revealing western European waters as a global hotspot for the lingering legacy of toxic PCB pollution.

The persistent chemicals, used in electrical equipment but banned in the 1980s, are still leaking into the oceans and were also found in extremely high levels in European dolphins, whose populations are in decline.