Listener Mail: Bizarre Blood Experiments, The DuPonts and Devil's Road, Colorado and Facial Recognition - a podcast by iHeartRadio

A listener writes in with a bizarre story of experiments with blood substitutes in the US and Brazil. The DuPont family is rumored to own a mysterious structure near a place called Devil's Road. Colorado courts controversy with new facial recognition requirements. All this and more in this week's listener mail.
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