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Science News August 31, 2002 Ivars Peterson	Golden Blossoms, Pi Flowers Fibonacci numbers (and the golden ratio) come up surprisingly often in nature, from the number of petals in various flowers to the number of scales along a spiral row in a pine cone. How do these numbers and the golden ratio arise?
Science News May 5, 2007 Julie J. Rehmeyer	The Mathematical Lives of Plants Scientists are figuring out why plants grow in spiral patterns that incorporate the 'golden angle'.
Science News April 2, 2005 Ivars Peterson	Sea Shell Spirals This growth process of a nautilus yields an elegant spiral structure, visible when the shell is sliced to reveal the individual chambers. Many accounts describe this pattern as a logarithmic (or equiangular) spiral and link it to a number known as the golden ratio... Puzzle of the Week...