AM - 2010 one of the hottest on record 21/01/2011

BOB CARTER: The question is not whether it causes warming, the question is how much warming? Since 1998 we've had three warm years - 1998, 2005 and 2010 - and each of those years is associated with an El Nino event which causes or is related to the warming. Okay, but there's no trend, 2010 is not significantly warmer in any way than 1998.

So we have a warm period over a period of 12 years. Over those same 12 years we have a five per cent increase in carbon dioxide in the atmosphere. The carbon dioxide is supposed to cause more warming. Well this data that we've just discussed tells you that human carbon dioxide emissions are not causing dangerous global warming, indeed they're not causing any warming at all at the moment.

MEREDITH GRIFFITHS: Professor Carter says the last 150 years have been among the coolest in the past 10,000 years of the Earth's history.