About the author

Ken-FrankKenneth D. Frank and his wife have resided in a row house in Center City for almost four decades. A graduate of Harvard Medical School, he is a retired physician with a life-long interest in natural history. His previous publications have been on the ecological effects of outdoor lighting, the disappearance of a giant silk moth from Philadelphia, and a jumping spider’s shift in hunting from day to night.


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Illuminating the bond between people and natural history