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A new Florida state law allows parents, and any residents, to challenge the use of textbooks and instructional materials they find objectionable via an independent hearing. Gulfiya Mukhamatdinova/Getty Images hide caption

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Gulfiya Mukhamatdinova/Getty Images

New Florida Law Lets Residents Challenge School Textbooks

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A limestone slab engraved with an image of an aurochs, or extinct wild cow, discovered at Abri Blanchard in 2012. Ph. Jugie/Musée National de Préhistoire hide caption

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Ph. Jugie/Musée National de Préhistoire

President Donald Trump is joined by the Congressional leadership and his family before formally signing his cabinet nominations into law on Jan. 20 in the President's Room of the Senate on Capitol Hill in Washington. From left are, Vice President Mike Pence, the president's wife Melania Trump, their son Barron Trump, and House Speaker Paul Ryan. J. Scott Applewhite/AP hide caption

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J. Scott Applewhite/AP

What did she say? Eniko Kubinyi/Science hide caption

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Eniko Kubinyi/Science

Their Masters' Voices: Dogs Understand Tone And Meaning Of Words

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Among the hominin fossils found at the Mata Menge site on the Indonesian island of Flores was part of a lower jaw. Kinez Riza/Nature hide caption

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Kinez Riza/Nature

Fossils Suggest That Island Life Shrank Our 'Hobbit' Relatives

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Female Drosophila bifurca flies have an organ to store sperm (right) that male flies compete to fill, crowding out rivals. Scott Pitnick/Nature hide caption

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Scott Pitnick/Nature

For Female Fruit Flies, Mr. Right Has The Biggest Sperm

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The harmless mite Demodex folliculorum, seen here in an electron microscope image, lives in the follicles of eyelashes. Andrew Syred/Science Source hide caption

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Andrew Syred/Science Source