This week on The Green Desk, Bronwyn Wilde spoke to Dr Kēpa Morgan about mauri modelling - a framework for decision-making which measures sustainability trends. Unlike a purely economic view of sustainability, the model recognises four dimensions of wellbeing, environmental, cultural, social and economic. Kēpa first invented the mauri-o-meter in his 2008 thesis about municipal waste water management, but since then it has been applied throughout the country to a number of ecosystems, including the clean-up following the Rena oil spill. Bronwyn and Kēpa spoke about the model, how it compliments and even improves on western science, and why we value certain knowledge over others.