Finding Indigo: An Adventure in Pharmacology

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John Hockenberry

John Hockenberry is an award-winning journalist with twenty-five years experience in radio, broadcast television and print. He is the host of WNYC and PRI’s The Takeaway, a correspondent for PBS Frontline, and a noted presenter and moderator at conferences such as TED, Aspen Ideas, and the World Science Festival.

As history would have it, in the mid-1660s, a young Isaac Newton shone a light through a prism and set out to delineate the colors of the visible spectrum. He added one color—indigo—in order to balance the colors and make them an even seven. Since then, modern scientists have stopped recognizing it as a separate division, but that didn’t stop a young Oliver Sacks from searching for it.

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