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Chemistry of Color: Flowers

"The Chemistry of Flower Color"

"Roses are red; violets are...well, violet — but why? "The Chemistry of Flower Color" explains how pigment molecules — carotenoids and anthocyanins — give flowers the colors we see. Also in this collection: news stories from the archives of NBC News and Scientific American on desert wild flowers, pollination, the cut-flower industry, and why flowers have scents; color plates of several floral families; and a flowery offering from Robert Louis Stevenson."

Video, transcript, image files.

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