Brain Candy

The Science Of Why Onions Make Us Cry

Sure, their beautiful, multilayered complexity has moved poets to weep. But the real answer is more practical: A bulb's gotta keep the baddies away. We get the lowdown from a chemist.

Celery: Why?

Considering humans' millennia-long struggle with famine, it's surprising anyone spent time or resources cultivating low-calorie celery. But the vegetable's original use had nothing to do with food.