Paleo - Vegan: the clash of diets

In 50 years, our food has changed more than in the last 10,000. Faced with its increasing industrialization and the concerns it creates, sometimes extreme diets are multiplying. We take a look at two lifestyles that seem to oppose each other: the "Paleo" tribe, which eats meat three times a day, and the "Vegan" movement, which boycotts all animal products