Radio 4 in Four - What are the roots of vegetarianism? - ÃÛÑ¿´«Ã½ Sounds

Radio 4 in Four - What are the roots of vegetarianism? - ÃÛÑ¿´«Ã½ Sounds
What are the roots of vegetarianism?
The historical roots of vegetarianism, why it began and the rise in interest.