The human brain doesn't stop developing until about 25 years old.
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When you shave a guinea pig it looks like a little hippo.
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The Manchineel Tree is so poisonous, rainwater dripping off it’s leaves will burn your skin.
17
Scientists lit a cave of natural gas on fire in 1971 expecting it to only burn for a few days; it still burns to this day. It has been nicknamed "The Door to Hell".
19