Should New Zealand lower its greenhouse gas emissions by reducing the number of dairy cows...or should we be looking at having fewer people?
Jamie Mackay put this thorny question to chief scientist for the Environmental Protection Authority Dr Jacqueline Rowarth on The Country today.
Dr Rowarth says humans make the biggest impact when it comes to GHG emissions but many governments will find it easier to reduce cow numbers.
In today's interview, Dr Rowarth and Jamie discuss China's one-child policy, the environmental impact of a growing population and whether New Zealand has surpassed the "sweet spot" for dairy cow numbers.
Listen to the full interview in the Soundcloud embed below:
