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Margaret Wertheim (born 20 August 1958) is an Australian-born science writer, curator, and artist based in the United States. She is the author of books on the cultural history of physics, and has written about science, including for the New York Times, Los Angeles Times, Guardian, Aeon and Cabinet. Wertheim and her twin sister, Christine Wertheim, are co-founders of the Institute For Figuring (IFF), a Los Angeles–based non-profit organization through which they create projects at the intersection of art, science and mathematics. Their IFF projects include their Crochet Coral Reef, which has been shown at the 2019 Venice Biennale, Hayward Gallery (London), Museum of Arts and Design (NYC), and the Smithsonian's National Museum of Natural History. For her work with public science engagement, Wertheim won the 2016 Klopsteg Memorial Award from the American Association of Physics Teachers and Australia's Scientia Medal (2017).