In 1958, the Crayola crayon color "Prussian Blue" was changed to "Midnight Blue" by the request of teachers as kids could not relate to Prussian history.

Whales love to sing! They use this as a call to mates, a way to communicate and also just for fun! After a period of time they get bored of the same whale song and begin to sing a different tune.

Women smile more than men do.

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