Climate change expert: how to get to zero carbon

New Zealand is one of the few countries that has set itself a goal of zero emissions. It's particularly bold given our huge agriculture sector. 

So how do we do it?  Professor Myles Allen is a climate change scientist at Oxford University. He is in New Zealand sharing his ideas about the best way forward in our attempt to lower emissions.  

He's giving a public lecture at the University of Auckland today and is in studio to give us an overview.