Our senses convey that all is not well with the natural world.

I haven't chosen to make an issue of faith.

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.

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

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

That was the crossover line for us, to be able to play that many shows, sell them out real quick and have that tribe queue up outside and still be a mystery to everybody else.

Look, very clearly there are things that need to be done urgently in relation to climate change, and of those the most obvious is to have an enforceable and equitable arrangement delivering deep cuts in emissions into the middle of the century.