by Len Tingle
Editor, Politics Show Yorkshire & Lincolnshire
UKIP MEP Godfrey Bloom and York Green Party councillor Dave Taylor offer contrasting views on the causes of climate change.
Yorkshire MEP Godfrey Bloom's claims that man-made global warming is a myth is angering the green lobby.
The controversial politician says historic data from the Government's meteorological office proves his case.
BBC weather forecaster and climate expert Paul Hudson says latest data points to a slowdown in global warming.
The Greens point to 17 increases in the UK's average temperatures in the past 20 years as evidence of climate change.
The next United Nation's international summit on climate change will be held in Copenhagen in December 2009. But it is a debate organised at York University students that has already opened up a bitter dispute over the causes of global warming.
Godfrey Bloom: "We need to stop, brake, rewind and rethink this whole energy problem."
"I am always deeply suspicious of received wisdom" says Yorkshire UKIP MEP Godfrey Bloom who will be taking part in that debate at the end of October 2009.
"As far as I am concerned man-made global warming is nothing more than a hypothesis that hasn't got any basis in fact.
"Every day more scientists are modifying their initial views. Recently 60 German scientists wrote to Chancellor Angela Merkel saying there was no proof for carbon causing global warming," he says.
The organiser of the York debate, music student and Freedom Society Chair Sam Westrop, says he's surprised by how much heat has been generated by trying to organise a global warming debate.
"We can't get a single Green Party politician to take part," he claims.
BBC Yorkshire Climate Correspondent Paul Hudson on latest Climate Change data.
"They say the the very premise of the debate is flawed. I have some climate activists calling me a fascist just for trying to open up the debate."
Green Party councillor for the City of York David Taylor says there has been a relatively steep increase in average temperatures in the UK for 17 years out of the past 20.
"As far as I am concerned that shows the effect of global industrialisation on the climate," says Coun Taylor.
"We have got to impose tougher green house gas emissions limits and do everything we can to ensure we stop burning so much fossil fuel."