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Episode 1590

Primary Colors

Centuries ago, monks who took a vow of silence developed their own hand signs, with hundreds of gestures, that are still in use today. Plus, how do speakers of different languages distinguish similar shades and tints of colors such as red, yellow...

Butter of Antimony, Flowers of Zinc

Butter of antimony, blue vitriol, flowers of zinc are terms used for centuries by alchemists, now replaced by the scientific names antimony trichloride, cupric sulfate, and powdered zinc oxide. In his delightful memoir Uncle Tungsten: Memories of a...

Darwin Quote on Living Well

In The Autobiography of Charles Darwin (Bookshop|Amazon), the great scientist writes, “If I had my life to live over again, I would have made a rule to read some poetry and listen to some music at least once every week.” This is part of...

Episode 1543

Goody Two-Shoes

She sells seashells by the seashore. Who is the she in this tongue twister? Some claim it’s the young Mary Anning, who went on to become a famous 19th-century British paleontologist. Dubious perhaps, but the story of her rise from seaside...