Who doesn’t love a good math holiday? Most people know about Pi Day (3/14), but there are even rarer days on the calendar ...

It’s wild to think that a math puzzle from the 1200s is now helping power AI, encryption, and the digital world we live in.

Leonardo of Pisa, also known as Fibonacci, is best remembered today for introducing a sequence of numbers: 0, 1, 1, 2, 3, 5 and so on, each number after 0 and 1 ...

This 407-million-year-old species of clubmoss doesn’t follow the Fibonacci sequence like most of its living relatives.

A series of whole numbers in which each number is the sum of the two preceding ones: 1, 1, 2, 3, 5, 8, 13, etc. Fibonacci numbers are used in a variety of algorithms, including stock market analysis.

Before the 13th century Europeans used Roman numerals to do arithmetic. Leonardo of Pisa, better known today as Fibonacci, is largely responsible for the adoption of the Hindu–Arabic numeral system in ...

Pine cones. Stock-market quotations. Sunflowers. Classical architecture. Reproduction of bees. Roman poetry. What do they have in common? In one way or another, these and many more creations of nature ...

Fibonacci Numbers are increasingly fashionable. Architects weave them into their buildings, and they figure heavily in books on the rapidly developing science of form in nature. But like so much else ...