Lough Neagh: The freshwater lake being poisoned by toxic algae

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Lough Neagh, the largest freshwater lake in the UK and Ireland, is being poisoned by a toxic blue-green algae, which is being blamed for killing fish, birds and dogs.

This has raised concerns about public health, as the lough provides about 40% of Northern Ireland’s drinking water.

Sky's senior Ireland correspondent David Blevins reports.