The invisible hand of the environment

The environment: that thing that sits in the background, quietly do its job. It's not a shareholder, it's not a fund manager, and it's not a politician, but it is arguably the biggest single component in the economy. How then do we account for it, how do we give it voice? Professor Kate Auty shares her insights from from Ledbeater's Possum, to cows grazing near New York, and - the Columbian civil war. Kate Auty is ACT Commissioner for Sustainability and the Environment, interviewed by Rod