On a global scale, the increase in economic development has resulted in the emissions of large quantities of man-made greenhouse gases into the atmosphere. Such activities include the combustion of fossil fuel releasing carbon dioxide(CO₂ ) the main greenhouse gas, the increase in livestock in agriculture producing methane (CH₄), nitrous oxide ( N₂O), and the uses of industrial products emitting chlorofluorocarbons (CFCs). 

The man-made emissions of greenhouse gases are enhancing the greenhouse effect which leads to an increase in the mean temperature of the Earth’ surface. By 1990, a series of international institutions (UNEP, WMO, IEA etc.) has issued urgent calls for a global treaty to address the problem. As a result, in June 1992, at the United Nations Conference on Environment and Development in Rio de Janeiro, over 150 nations signed the Framework Convention on Climate Change (FCCC). FCCC aims to stabilise atmospheric greenhouse gas concentrations at a level that does not affect the Earth’s climate. On March 21, 1994 FCCC enters into force. In the Slovak Republic this convention enters into force in November 23, 1994. 

SR committed itself to stabilise the greenhouse gases emissions at the 1990 level to the year 2000 and to reduce them by 20% to 2005 - as compared to 1988 (Toronto aim). At the third conference of United Nations Framework Convention on Climate Change (UNFCCC) in Kyoto in December 1997 SR committed itself to reduce CO₂ to 2010 by 8% - as compared to 1990. 

PRESSURE	STATE
Trend in emissions of greenhouse gases (GHG) by sources	Climate changes observed in the SR