The United Nations Framework Convention on Climate Change is an international treaty, that was signed on 9 May 1993 and entered into force on 21 March 1994. It wants to slow the speed at which the climate of the earth changes. It also wants to avert the risk of a climate change that is harmful to mankind. 154 countries signed the treaty in 1992 in New York. Today, 197 countries are member of the treaty. These countries meet once a year to agree on politics against global warming.