PHUKET: Whenever I read the letters in a national newspaper, or dare to utter the phrase "climate change" in a bar, someone invariably seems to want to take issue with the idea of global warming. There have always been skeptics – usually from vested commercial or political interests.

Proponents of climate change have been branded "criminals" by Lord Monckton, advocates of "massive scientific fraud" by US Senator Sensenbrenner, or selling "snake oil" by the Tea Party’s Sarah Palin.

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