Should we take animals out of the food chain?

Dr. Mike Joy made the controversial statement in our water debate this week. He's suggesting we should move to plant-based food production and be animal-free by 2050.

Dr. Graeme Coles has other ideas. Coles is the technical director of Knewe Bio-Systems and he says that although plants have their merits, dairy farming is an efficient and cost-effective food source.

Have a listen to the full interview in the Soundcloud embed below: