The government has set a target of reaching ‘net zero’ in terms of greenhouse gas emissions by 2050 and the NFU wants to see farmers reaching that target by 2040. But how are we going to get there? What is ‘net zero’ and what does it mean for farmers in Wales? To tackle these questions we catch-up with Hugh Martineau from Brecon, who is a part of a group of farmers who have come together to try and map out the path to ‘net zero’.