- The spikes of a newborn hedgehog begin to appear within 24 hours.
- Plastic bottles were first used for soft drinks in 1970.
- Artificial Christmas trees have outsold real ones every year since 1991.
- Once a women reachs the age of 30 they lose 1% of their bone mass every year thereafter (by the time a women is 50 she will have lost 20%).
- The tentacles of the giant arctic jellyfish can reach 36.6 meters (120 feet).
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