On Fibonacci Day, mathematicians and scientists honor one of their own: Leonardo Bonacci, better known as Fibonacci. The medieval mathematician popularized 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.
Fibonacci Day
Today in History
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The ruins of a Maya superpower
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A winter wonderland in Northeast China
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It s aboat time for the Barcolana
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Monarch butterflies migrate south
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It s time to fall back
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Castilla-La Mancha, Spain
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Göreme, Cappadocia, Turkey
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A stunning national park in winter white
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Bathing boxes at Brighton Beach, Australia
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A wild and scenic scene
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Heceta Head Light, Florence, Oregon
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The Bahamas
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North Sea at sunset, Norddorf, Germany
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Cherry blossoms at the National Mall, Washington, DC
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La Rocque Harbour, Island of Jersey
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The Door County Coastal Byway in Wisconsin
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Great horned owl
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Saint Nicholas Day in Verbier, Switzerland
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St. Joseph North Pier Inner and Outer Lights, Michigan
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National Park Service anniversary
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And they’re off!
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St. Patrick s Day
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Venture into a prehistoric gallery of art
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Celebrating Helsinki’s birthday at the Kiasma Museum
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Christmas market at Belvedere Palace in Vienna
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Mont-Saint-Michel, Normandy, France
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American Wetlands Month
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Wahclella Falls, Oregon
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An improbable tribute for Towel Day
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The Lena Delta Wildlife Reserve in Siberia, Russia