They say the only constant in life is change. In mathematics, however, there are many constants and today, we"re celebrating perhaps the most famous of them all: pi. Represented by the symbol π, this tasty-sounding number is the ratio of a circle"s circumference to its diameter, approximately 3.14159. Every March 14, mathematics fans across the world get baking to mark Pi Day with a pie. It began in 1988, when physicist Larry Shaw connected the date (3/14) with the first three digits of π. Today, mathematicians and enthusiasts celebrate Pi Day with pie eating and pi reciting. Did you know that when your clock strikes 1:59 today, you will be three decimal places closer to the real value of pi? Pi is everywhere, even in nature. Pictured here is a bodhi tree which has grown over an arch into the shape of the pi symbol at Wat Phra Ngam, a temple in Ayutthaya, Thailand. Whether you"re a math geek or just in it for the treats, Pi Day is for everyone to enjoy!
Happy Pi Day!
Today in History
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Falling for Tennessee
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Teacher Appreciation Day
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Little Pigeon River, Great Smoky Mountains, Tennessee
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World Water Day
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Black History Month
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Seasonal lights dazzle in Japan
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Tassili n’Ajjer, Sahara, Algeria
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Giving Tuesday
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European fallow deer in England
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European hedgehog in Sussex, England
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A narrow passage
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Great Backyard Bird Count
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International Ice and Snow Sculpture Festival, Harbin, China
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Celebrating the Day of the Dead
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Atop the Needle of Chamonix
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A wild, craggy corner of the United States
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Welcome to my neck of the woods
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World Art Day
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Christmas Eve
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Finding a balance between wetlands and water treatment
Bing Wallpaper Gallery

