Nitrous oxide
Study: Urban air quality improved less during Covid-19 lockdown than previously thought
Researchers reveal NO2 emission reductions during first lockdown were lower than previously thought, amidst warnings ozone levels actually increased
Study: Fertiliser use threatens global climate goals as nitrous oxide emissions soar
Scientists urge reform of global food production system after study shows N2O levels - emitted largely by farming fertiliser - have soared over past two decades
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