Subject(s): Atmospheric nitrous oxide -- Environmental aspects -- Nitrous oxide -- Environmental aspects -- Greenhouse gas mitigation -- Agricultural pollution -- Climatic changes -- Environmental Studies -- TECHNOLOGY & ENGINEERING -- Pollution Control -- Microbial terrestrial pathways to nitrous oxide, marine pathways to nitrous oxide, global nitrous oxide budget, nitrous oxide emissions from nitrogen cycle in arable agriculture- estimation and mitigation, nitrous oxide emission from nitrogen cycle in arable agriculture, nitrous oxide emission from nitrogen cycle in livestock agriculture, nitrous oxide emissions from land use and land management change, indirect emissions of nitrous oxide from nitrogen deposition and leaching of agricultural nitrogen, abiotic nitrous oxide sources- chemical industry and mobile and stationary combustion systems