A Flexible, 9-Ft. Whale Tooth With Super-Sensing Power?
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In this National Geographic News article, read about research into the structure and function of narwhals' tusks. Research reveals that the oversize tooth possesses a rare combination of extraordinary strength and extreme flexibility. Scientists also found evidence that the tusk may be a hydrodynamic sensory organ that contains an extensive nerve system and gathers valuable information for survival in Arctic waters. Links to other stories, photos, videos and Web sites are also found on this page.
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Topics: History-Social Science, Life Sciences, Geography, American Democracy, Science
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