It's not because global warming is a myth. As the Beeb reports:
Global temperatures for 2008 will be slightly cooler than last year as a result of the cold La Nina current in the Pacific, UN meteorologists have said.
But this year's temperatures would still be way above the average - and we would soon exceed the record year of 1998 because of global warming induced by greenhouse gases.
Global climate change is a long-term trend; that doesn't mean it is not a current threat, though.