- The golden ratio of approximately 1.618 between two quantities such as lengths often appears in nature (tree branching, uncurling ferns, pine cone arrangements etc) and has been used throughout history to create aesthetically pleasing designs and art works such as Leonardo da Vinci's Mona Lisa..
- 'underground' is the only word that begins and ends with the letters 'und'.
- The average mature oak tree sheds over 700,000 leaves in Autumn.
- The hottest chile in the world is the habanero.
- Hummingbirds are the only bird that can fly backwards.
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