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TIL the Sovient Union developed a nuclear weapon so power that not even they were willing to test it at full capacity. The Tsar Bomba was the largest nuclear bomb ever tested in the earth's atmosphere, having a mushroom cloud spanning over 40 miles (64km) and a yield of 57 million tons of TNT.

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We64 TIL when asked what future technology they would most like to have, young adults answered “time travel” more than any age group, while 30-to-49-year-olds wanted robot servants more than any other age group. Senior citizens were the least interested in time travel.
xVxXw TIL that the reason why Olive Oil bottles are so dark is because it's protecting the oil from the light, Which if not dark will degrade the oil.
NXeQe TIL a pair of dogs were awarded UK's Dickin Medal for guiding their owners and others to safety during the Twin Towers 9/11 attacks
Z8pkp TIL that by law, no United States officer can outrank George Washington. He was posthumously promoted to Six-Star General in 1976.
7rR1p TIL, In Australia, torn money is valued by the percentage of the banknote remaining. Half of a $20 bill is valued at $10. Banknotes must be greater than 20% of the original size to have any value. If a banknote is 80% or greater in size it is worth the full value