tea

The Duality of Caffeine

Caffeine is a heck of a drug - at the same time it's both good and bad for you. Learn the good, bad and ugly about this everyday stimulant in today's episode.

How Tea Works

Legend has it that tea was discovered by a curious Chinese emperor after leaves blew into his boiled water. Now tea is the second only to water in popularity worldwide. And despite the varieties of tea, they all come from a single species of plant.