The long-term fluctuations in temperature, precipitation, wind, and all other aspects of the Earth's climate.
It is also defined by the United Nations Convention on Climate Change as “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”
Driver - Ecosystem change - Greenhouse gas
GreenFacts Summary on Climate Change 2007 Update
Deutsch: Klimawandel
Español: Cambio climático
Français: Changement climatique
Nederlands: Klimaatverandering