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Useless Fact #33

Polar bears are almost undetectable by thermal cameras
Polar bears are almost undetectable by thermal cameras

Polar bears are almost undetectable by thermal cameras 

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Though famous in popular culture, ‘The Iron Maiden’ never existed as a torture device.

Useless Fact #32

During a hot summer, the Eiffel Tower can grow up to 10 cm taller

Useless Fact #34