Videos of a climate change denier falsely claiming that human-caused carbon emissions are not driving global warming have been viewed tens of thousands of times online. One climate expert told AFP that the arguments put forward by Australian geologist Ian Plimer during a gathering of political conservatives had been "designed to mislead". There is consensus among climate scientists that global warming is driven by human activity, and in particular the burning of fossil fuels especially since the end of the 19th century.

A video of the false claim was posted on Facebook here on October 27, 2022 by CPAC Australia, a conference of politically conservative activists and politicians.

It was shared more than 2,400 times, and viewed more than 42,000 times.

The one-minute 12-second video shows an excerpt from a speech geologist Ian Plimer gave at the CPAC Australia conference in Sydney on October 2.

"I don't have opinions, I have demonstrable facts," Plimer tells the audience.

"Fact number one: No one has ever shown that human emissions of carbon dioxide drive global warming -- never been shown."

He adds: "And if it could be shown, then you would have to show that the 97 percent of emissions, which are natural, do not drive global warming. Game over. We are dealing with a fraud, that's a scientific fraud from day one."

Plimer then speaks about the "propaganda" that increases in carbon dioxide will bring about runaway global warming, telling the audience that the "exact inverse" is...

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