National Geographic Traveler has scoured the globe for the world's most beautiful, interesting, and off-beat road trips. Dive in to get drive directions, quizzes, photos, and more.
Wednesday, November 11, 2009 |
Wednesday, November 11, 2009 |
Photo: Early Birds, Night Owls: Blame Your GenesResearchers found that preferences for when people wake and go to sleep is encoded in their genes and the molecules of skin cells. Photograph by Jason Homa/Getty Images
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