Vegetarianism seems more popular than ever. Veggie burgers grace menus and barbecues across the country. Children and teenagers declare themselves vegetarian to assert dietary independence from their parents.
Vegetarian cosmetics and cruelty-free clothes fill corner drugstores and high-end shops. But although vegetarianism is trendy, sometimes rebellious and decidedly modern, it's actually one of the earliest diets.
Some cultures have subsisted without meat for millennia. Socrates, Plato, Leonardo da Vinci, Charles Darwin and Thomas Edison were all vegetarians [source: VegNews.com].
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