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.

Squirrel monkeys and male baboons will gesture with an erect penis as a threat to predators or as a sign of impending danger.

The same amount of calories are burned by doing 6 sessions that are 5 minutes each of an activity and doing 1 session of that activity for 30 minutes.

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