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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					A bird of beauty
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					Yellow-eyed penguins, Moeraki, New Zealand
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					The owl that loved football
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					Tom Turkey takes Manhattan
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					Hollywood s big night
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					Explorer of the sea
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					A glittering diamond in the rough
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					In search of a ‘great’ pumpkin
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					So, how long till springtime?
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					Après-ski in the Dolomites
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					World Octopus Day
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					Desert bighorn sheep in Valley of Fire State Park, Nevada
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					Cecil Brewer Staircase, London
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					World Dolphin Day
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					Observing World Braille Day in Bavaria
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					Mont-Saint-Michel, Normandy, France
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					Palazzo Zuccari, Rome
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					Camels in the desert, United Arab Emirates
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					Enter the magical world of Livraria Lello
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					A Portuguese fort takes a star turn
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					Australian baobab tree, Kimberley region, Western Australia
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					A plot was afoot
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					An unlikely friendship in the wild
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					Happy Fat Tuesday!
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					Okavango Delta, Botswana
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					That s quite a schnoz, baby tapir
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					Presidents Day
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					Tulips at Emirgan Park in Istanbul, Türkiye
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					White dunes, blue lagoons
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