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Often times when you face such an overwhelming challenge as global climate change, it can be somewhat daunting - it's kind of like trying to lose weight, which I know something about.

I'm a natural sceptic.

It really gets on my goat that people keep quoting Dorothea Mackellar's 'My Country' as proof that there is no such thing as climate change. A poem written more than 100 years ago by a homesick 19 year old versus an ever-increasing body of refereed scientific thought... hmm, hard to know which way to jump, really.

Unlike many in the conservative camp, I accept theories of global warming, and accept that man-made activity has played a part in global warming. My differences have only been on what the solutions should be.

I absolutely do not believe in the science of man-caused climate change.

The climate is changing, and anyone who disagrees is, in my view, still in denial.

Science changes, and it's odd to me that scientists say, 'Never be skeptical,' because it was in the mid-'70s when they were saying we're sunk because we're going to have global climate cooling.

My first inclination is to be a bit skeptical about the claims that human-produced carbon dioxide is the direct contributor to global warming.