Ammonia pollution: British government ‘needs to make emergency interventions' in Northern Ireland
Second major investigation into planning scandal
Planning probe now investigating more than 100 farm applications
More than a dozen applications for new pig and poultry units under investigation
Ammonia strategy would only save fraction of Northern Ireland's conservation areas
Climate change: 'Not much hope' of Northern Ireland meeting emissions targets due to lack of Executive
Lough Neagh: Year-long investigation exposes serious issues with management of the lake
Lough Neagh: Facts on sand dredging
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