Greek yogurt. Spicy chipotle mayo. Honeycrisp apples. The Cronut. These days, it seems we are constantly discovering a new food that will make us healthier, happier, or even somehow smarter. After a brief life as a novelty houseplant and "I Love the '80s" punchline, chia seeds are suddenly a superfood. Speaking of which, what ever happened to pomegranate juice? Or acai berries? David Sax uncovers the world of food trends: where they come from, how they grow, and where they end up.
