Come take a tour of plants and animals and see which grow according to the Fibonacci numbers and the related Golden Ratio ϕ. Not all flowers have a Fibonacci number of petals, some have 4, 6 or 18. Tusks, talons and shells: does their curvature match a Golden Spiral? And what were the earliest plans to grow with spiralling shoots off a central stem? Click any picture or start at the beginning.
