Conservation Biologist and Placenta Expert Kurt Benirschke Dies

He established the San Diego Zoo’s cryopreserved Frozen Zoo.

Written byShawna Williams
| 2 min read
Kurt Benirschke holding a box of frozen vials

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Kurt Benirschke, a pathologist who also conducted pioneering research on animals at the San Diego Zoo, died on Monday (September 10), the zoo announced. He was 94.

“He was insatiably curious,” his son, Rolf Benirschke, tells The San Diego Union-Tribune. “If there’s one trait about my dad that I most admired, it is that he was curious. He always wanted to learn.”

Benirschke was born in a small town in Germany in 1924 and earned his MD at the University of Hamburg before immigrating to the United States in 1949. He did a pathology residency at Harvard Medical School’s affiliated hospitals, and later chaired Dartmouth Medical School’s pathology department for a decade. His research there focused on the placenta and comparative reproductive biology, according to the zoo’s statement.

In 1970, Benirschke took a post as a pathology professor at the University of California, San Diego (UCSD). He served as research ...

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  • Shawna was an editor at The Scientist from 2017 through 2022. She holds a bachelor’s degree in biochemistry from Colorado College and a graduate certificate in science communication from the University of California, Santa Cruz. Previously, she worked as a freelance editor and writer, and in the communications offices of several academic research institutions. As news director, Shawna assigned and edited news, opinion, and in-depth feature articles for the website on all aspects of the life sciences. She is based in central Washington State, and is a member of the Northwest Science Writers Association and the National Association of Science Writers.

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