Bobby McFerrin
The universality and innate nature of music, and the pentatonic scale, as demonstrated by singer Bobby McFerrin.
© World Science Festival (A Britannica Publishing Partner)
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© EcoView/FotoliaA flock of red-billed queleas (Quelea quelea), Etosha National Park, Namibia.
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Encyclopædia Britannica, Inc.African colonization changed history—and the map.
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Contunico © ZDF Studios GmbH, MainzAn overview of the African slave trade, with a discussion of Zanzibar.
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Created and produced by QA International. © QA International, 2010. All rights reserved. www.qa-international.comThe distribution of the seven continents.