Could going vegan help feed the world and save the planet? While industry and energy production are often singled out as the main drivers of climate change, the global meat production industry is a bigger polluter. Veganism advocate Gary Francione and nutritionist Dr Ron Weiss join Nuala McGovern to discuss the pros and cons of veganism. While it might make sense from an ethical and climate change perspective, it is a massive cultural leap for many. We ask whether veganism could really be useful in places where food might not be readily available. And answer concerns over whether a non-meat diet can provide adequate nutrition.