Ever wonder why your medical form says “A positive” or “O negative”—and what that even means? In this rainy-night episode of Voices of Discovery, Roxie pours a cup of coffee and unpacks the strange, funny logic behind our blood types. From Karl Landsteiner’s 1901 discovery to the rare “Bombay phenotype,” she turns medical science into late-night storytelling—complete with fainting anecdotes, apple juice, and a few too many coffee refills.It’s biology explained like a chat with a friend: curious, a little clumsy, and full of “wait—what?” moments. Discover how evolution wrote survival codes into our veins, why variety keeps us alive, and why O-negative might sound dramatic but isn’t.Stay curious—and maybe eat before donating.

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