Popcorn is the only grain in the corn family that pops in response to the application of heat—specifically, temperatures above 180° C. It has a lot to do with the structure of the kernels.

Popcorn is a truly ancient snack. Archaeologists have uncovered popcorn kernels that are 4,000 years old. They were so well-preserved, they could still pop. Dolores Piperno, a paleobotanist with ...

Popcorn is a truly ancient snack. Archaeologists have uncovered popcorn kernels that are 4,000 years old. They were so well-preserved, they could still pop. Dolores Piperno, a paleobotanist with ...