What role can seaweed farming play in the fight against climate change?

Not for the first time, dairy farming and monoculture is in the international spotlight with regards to climate change. Farming is a big part of New Zealand's identity and its economy. So what are the alternatives? One suggestion is turning to what has been called the blue economy, our oceans, and in particular, aquaculture. Prof Andrew Jeffs, from the Institute of Marine Science at the University of Auckland and Clare Bradley, CEO of AgriSea talk to us about the latest research into seaweed farming in New Zealand, its potentially positive impacts on biodiversity, climate change and our coastal communities, and what we can learn from the history of on-land farming.