say we're joined now by holdin a farmer the former director of the sustainable food trust dr marko springman mark who's a senior researcher on environmental sustainability of public health the university of oxford he also was signed the letter who we start with dr springman can we begin with you to what extent then just briefly does meat dairy consumption need to be reduced and perhaps more to the point do you expect it to be heated side of the western world particularly countries like india china. well what we see now in country high income countries like here. animal source foods that are responsible for 80 to 90 percent of the food related to carbon footprint that we have it's really clear that if we don't change i would die is here but also diets all around the world through more healthy and plant based diets then the. emissions due to food will take up to complete emissions budget that we have in order to stay within 2 degrees of global warming so we urgently need to change what we eat for climate change purposes and we found that changing to a more healthy and mostly plant based diet would