cli•mate change [ ˈklīmit ch ānj ] noun, 1. 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. Also referred to as global warming. [According to the United Nations Framework Convention on Climate Change].
According to a consensus of scientists around the world (and their study of ice cores, floral and faunal records, sea level records and glacial processes) that
1. temperatures are rising rapidly,
2. much of this warming can be attributed to human related activities, and
3. drastic and immediate action is needed before the damage can never be undone.