Video of an excellent summary about Natural Capital by Dieter Helm at Irish Natural Capital Forum October 2016 here. 

I didn't attend myself, but the video records Professor Helm's 30-min talk and Q&A.  Prof Helm is Chair of the UK's Natural Capital Committee. 

Some wonderful soundbites, eg "No country in Europe currently has a Balance Sheet"  (9mins 30).  and "better to be roughly right than precisely wrong" (11 mins 45 to 12 mins 15).  

Accountancy isn't just for business, it's for the environment" (About 20 mins).

The UK's Natural Capital Committee continues to advise Government on how the 25 Year Environment Plan can be created in such a way that the environment we leave to our children is no worse than the one we inherited ourselves. 
The Committee's 2017 report on this can be found here.

The Planetary CFO will be keeping an eye on how the 25 year plan shapes up, because merely stopping the decline is not going to be good enough in the longer-term.  We will need a co-ordinated world-wide plan for the environment globally, for a sustainable environment to provide well for peak global population of, perhaps, 10 billion.