This week's nugget reacts to the latest efforts by the dairy industry to make cow's milk more 'sustainable'. We'll be talking about Bovaer which is a compound added to feed to reduce the amount of methane produced by cows.

You can listen to more on dairy with our brilliant guests if you check out 'Strength to go dairy-free: milk choices, with Rosie Martin RD' and 'Hip hip hooray: here's to fracture free living and healthy bones on a plant-based diet, with Dr Rajiv Bajekal.'