More commonly known as Fibonacci, Leonardo Bonacci is notable for popularising the Hindu-Arabic numeral system, with its use of zero, decimal points and 10 numbers instead of the ponderous Roman numeral system. He"s most famous, however, for his sequence of numbers: 0, 1, 1, 2, 3, 5, 8... By adding the first two numbers, you arrive at the third, and adding the previous two numbers, you arrive at the next number, and so on. Disregarding the zero, the first four numbers correspond to today"s date, 11/23.
Spiral aloe, Kangaroo Island, Australia
Today in History
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Bruce Peninsula National Park, Ontario, Canada
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Golden Bridge, Bà Nà Hills, Da Nang, Vietnam
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Poinsettias
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Alfanzina lighthouse, Algarve, Portugal
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Iguazú Falls, Foz do Iguaçu, Brazil
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Zahara de la Sierra, Andalusia, Spain
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Poinsettia flower
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Kachina Bridge, Natural Bridges National Monument, Utah, United States
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The Pragser Wildsee in the Dolomites, Italy
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Modica, Sicily, Italy
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Ljubljana, Slovenia
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Buttermere, Lake District National Park, England, United Kingdom
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Green-crowned brilliant
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Hoh Rain Forest, Olympic National Park, Washington, USA
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Marine iguanas, Galápagos Islands, Ecuador
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Pillars of Creation
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European river otter
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Ardez village, Graubunden, Switzerland
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Swaledale sheep in North Yorkshire, England
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Scotts Bluff National Monument
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Ring-tailed lemur
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Whale shark
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Ancient town of Sorano, Tuscany, Italy
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Cachoeira da Fumacinha, Bahia, Brazil
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Prioro, Castile and León, Spain
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Carlsbad Caverns, New Mexico, USA
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Maasai giraffes
Bing Wallpaper Gallery

