The porcupine can regenerate its quills — a single adult can have 30,000.
Fact #9931
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The city of Jericho is one of the oldest known walled cities.
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The fossil record is incomplete but still informative.
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Nothing can travel faster than light in a vacuum.
Fact #1732 · General
Nothing can travel faster than light in a vacuum.
Fact #1979 · General
Repetition can help move information into long-term memory.
Fact #977 · General
Nothing can travel faster than light in a vacuum.
Fact #1834 · General
Memories are reconstructed each time you recall them.
Fact #2034 · General
Your mind explores reality.
Fact #2323 · General
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