› added 6 years ago

479

TIL that there is a new state of matter that exists and it is known as time crystals. These lab-created time crystals are structures that repeat periodically in time rather than space.

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jjNE TIL that the literacy rate in Afghanistan is 28.1%. 43.1% for men and 12.6% for women.
yMrw TIL Han Chinese are the largest ethnic group in the world, representing 92% of China’s population and 19% of the entire human population. (~1.3 Billion people)
0wOJA TIL: Humanity invented nuclear weapons before we invented compound bows.
J1n14 TIL when US President McKinley was shot in Buffalo, the city's best surgeon Roswell Park, was operating on someone else in Niagra Falls. When they told him he was needed in Buffalo, he responded that he could not leave, even for the President of the United States. He was then told who had been shot.
GQog TIL U.S. Military Working Dogs have ranks: they are always one rank above their handler, so that hurting one intentionally would have the same consequences as striking an officer