Carla Hayden, shown in 2015, was confirmed by the Senate on Wednesday to head the Library of Congress. Hayden is the longtime leader of Baltimore's library system. Dave Munch/Baltimore Sun/TNS via Getty Images hide caption

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Michael Emberley's illustrations, like this one showing an egg traveling through a fallopian tube, make sexual health information accessible to an elementary and middle school audience. But elements of the art, including naked bodies, make some parents uncomfortable. Candlewick Press hide caption

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It May Be 'Perfectly Normal', But It's Also Frequently Banned

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