The time when agricultural production activities were considered neutral to the environment has definitely passed. For last 25 years there has been growing scientific evidence on the potentially deteriorating effect of ammonia released in the process of agricultural production on the environment. In the last 15 years additional focus has been given to environmental and health impact of dust and VOC’s generated by farming activities. Only very recently is the contribution of agricultural production GHG’s to global warming recognised. In the book the various aspects of agricultural emissions are discussed. Its first part refers mainly to introductory, theoretical, and methodological issues. The second part gives the most recent data on national emissions, particularly these of Nitrogen species in selected individual European countries and the projections of their emission for all Europe. The third part which deals exclusively with ammonia brings comprehensive survey of its emission abatement potentials, the cost of appropriate actions and the difficulties in their practical implementation. It also considers the potential side effects of ammonia emission abatement measures.