› added 11 years ago

63

TIL that revolving doors exist to prevent drafts when the door opens, saving energy on heating and cooling.

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WwD4 TIL that the Caesar salad was invented by a Mexican chef named Caesar.
0wZ7p TIL of the Vandals, a large East Germanic tribe originating from Poland and who, fleeing from the Huns, gradually migrated to Roman territories during the fifth century. They conquered Spain and most of Northern Africa and eventually sacked and looted Rome. The word "vandalism" is named after them.
JYNLQ There is a weird black hole which bends light back on itself like a boomerang.
jN4WR TIL that birds have their own regional accents!
R0Qa TIL With 150,000 post offices, India has the largest postal network in the world. However, it is not unusual for a letter to take two weeks to travel just 30 miles.