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TIL penguins’ distinct coloration is a form of camouflage. From above, their black backs blend in with murky depths of the ocean. From below, their white bellies are hidden against the bright surface.

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xVoBb TIL tarot decks were originally used to play various card games similar to bridge, and are still used this way in parts of Europe. They did not become widely associated with the occult until more than 300 years after they were invented.
X0eQX TIL Sweden and Norway has its own definition of a mile, being 10 kilometers. As a swede i always thought that this was the standard in the whole world except The US.
dDExj TIL the dog bark in 'Been Caught Stealing' by Jane's Addiction was accidentally recorded. Singer Perry Farrell brought his dog to work and his dog got excited when she saw his owner singing. Rolling Stones magazine called it the best use of dog barks since The Beach Boys 'Pet Sounds'.
mYEY TIL The Segway was #1 on Time’s worst inventions of all time
W7VnX TIL that the Czech Republic is home to the largest castle complex in the world, Prague Castle. The complex covers over 70,000 square meters and includes numerous palaces, churches, and gardens. It has been the seat of Czech rulers for over a thousand years.