Evolution chose the Fibonacci pattern to help trees track the sun moving in the sky and to collect the most sunlight even in the thickest forest.

When her elf-child had departed, Hester Prynne made a step or two towards the track that led through the forest, but still remained under the deep shadow of the trees.

Ten minutes later we were driving through forest along a raised dirt track when a rhino fresh from a wallow climbed onto the road, followed by an equally muddy juvenile two-thirds her size.