Support WBURNational Geographic Bee: Test Your World KnowledgePlay02:59Download AudioBill ChappellMay 24, 2012 ShareA view of Earth, with shading to enhance features. Only 10 contestants remain in the 2012 National Geographic Bee. (NASA)
A view of Earth, with shading to enhance features. Only 10 contestants remain in the 2012 National Geographic Bee. (NASA)