CEVAP:

Climate Change: The United Nations Framework Convention Climate Change
defines climate change as a change of climate which is attributed directly or
indirectly to human activity that alters the composition of the global atmosphere and which is in addition to natural climate variability observed over comparable time periods.

To help reverse the effects of climate change and pollution, the Kyoto Protocol, an international agreement signed by 191 states and the European Union, set binding emission reduction targets for its parties, particularly industrialized countries which are responsible for high levels of greenhouse gas emissions in the atmosphere due to long industrial activity. Despite its almost global accep tance, the United States and China, the two countries with high GHG emissions in the world were not parties to Kyoto.