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A Magical Migration Updated: 2009-01-23 16:00:00 Description: In this excerpt from NOVA's "The Incredible Journey of the Butterflies," see just how astounding the monarch butterfly's sense of navigation is, and learn how monarchs are tracked across North America. Watch NOVA every Tuesday night on PBS. Or join us online at pbs.org/nova. Funding for NOVA is provided by ExxonMobil, David H. Koch, the Howard Hughes Medical Institute, the Corporation for Public Broadcasting, and public television viewers. To learn more, visit http://www.pbs.org/nova/butterflies LISTEN NOW | DOWNLOAD |
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