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Mara Hvistendahl
Mara Hvistendahl is a correspondent with Science and the author of Unnatural Selection: Choosing Boys Over Girls, and the Consequence of a World Full of Men. Follow her on Twitter here.
Articles By Mara Hvistendahl
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Will Gattaca Come True?
Noninvasive, early fetal tests for sex, paternity, and chromosomal conditions will change pregnancy dramatically—and raise tricky ethical questions.
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Cesarean Nation
The cautionary tale of how China came to have the world's highest C-section rate.
