The numbers 1, 1, 2, 3, 5, 8, 13, 21, 34, and 55 belong to a famous sequence named for the Italian mathematician Fibonacci, who lived more than 700 years ago. Each consecutive number is the sum […] ...

The Fibonacci sequence even plays a role in the subtle spirals you can see in the seed head of a sunflower. This is because of something known as the Golden Ratio, the Golden Section or the Greek ...