Caffeine: The World’s Most Popular Drug

A tablespoon of it will kill you, but most of us feel like death
without it: we’re talking about caffeine this episode. Inspired by
a listener question — does green tea have more or less caffeine
than black? and what about yerba mate? — Cynthia and Nicky explore
the history and science of the world’s most popular drug. Listen in
as we discover the curious effect of birth control pills on
how our bodies process it, calculate how much of an edge it gives
athletes, and learn what dolphin dissection and the American
Constitution have to do with each other, and with caffeine.  
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