Keith Woodford: How can we make dairy sustainable? Happy cows in a New Zealand dairy composting barn. OPINION: The big challenge for New Zealand dairy is how it can become sustainable in the coming decades. The dairy industry has made huge progress with the first three of these but not the fourth. I am becoming increasingly confident that dairy composting barns can provide a key pathway to pastoral dairy sustainability.

Source: Stuff November 22, 2017 00:11 UTC