Nitrogen pollution is one of the major environmental challenges of our time, costing the EU £60-280bn per year, says the European Nitrogen Assessment (ENA).1
Launched in 2006 to review the role of excess nitrogen in environmental problems and the potential solutions, the ENA was carried out by 200 experts from 21 countries and 89 organisations. Its findings are summed up in the Edinburgh Declaration.2
Nitrogen in air is unreactive and inaccessible to most living things. But crops need it to grow: it is estimated that half the world’s population would not be here without man-made fertilisers.