Climate change is such a huge issue that it requires strong, concerted, consistent and enduring action by governments.

There is job growth in renewables, there is job growth in energy efficiency and there is job growth in developing innovative industries and technologies to successfully meet the challenge of climate change.

You don't want to spend your life explaining yourself.

I have always had, as I know many people have, a singular passion for Australia. I do love the sunburnt country, its ancient landscapes, its exhilarating reaches of sand and sea.

It is now well understood that humans ultimately depend on the health of the planet for their wellbeing.

Climate change is also clearly a matter of huge interest and concern for the scientific community.

But no matter how big the effort to push a propaganda line might be, climate change is bigger. This, undoubtedly and regrettably, is the biggest immediate long-term environmental challenge we face. A failure to concretely come to some policy outcome on climate change has not only a negative environmental impact but also social and economic consequences for us.