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TIL that a common swift (bird) can spend 2-3 years in the air without interruption

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NQy8 TIL Finland has the most heavy metal bands per capita in the world. While Sweden and Norway have only 27 heavy metal bands per 100.000 inhabitants, Finland boasts double as much, 54 bands per 100.000.
Y7jeG TIL - Rats prefer the sound of silence to Beethoven and Miles Davis – except when they are on drugs. Then, they prefer the jazz.
GYgbj An egg-cellent activity from Science Buddies
pY1Yp TIL in Machiavelli's comedy "Belfagor arcidiavolo", a demon decides to investigate why humans arrive in hell constantly complaining about marriage life. He gets married, goes into debt, barely escapes his angry creditors, returns to hell defeated and vows to never visit the world of humans again.
j7Xa TIL that France classifies books as an “essential good,” along with electricity, bread, and water.