On this week's "CBS Sunday Morning" with host Jane Pauley, Just 5-percent of U.S. households are vegan or vegetarian, but there are plenty you might call "plant curious," with omnivores swapping out some meat for vegetables in a diet that's plant-based or "flexitarian." Correspondent Ben Tracy talks with vegan foodie Tabitha Brown about how she changed her diet; with Ross Mackay, co-founder of Daring Foods, creator of plant-based chicken alternatives; and with restaurateur Ran Nussbacher, who believes a plant-based diet will protect the planet for future generations.

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