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TIL that Linear A, the writing system used by the Minoans of Crete, still hasn't been deciphered.

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YpDPZ TIL that Native Americans continued to own Don Cheadle’s ancestors as slaves after the civil war.
YVrZ TIL that Will Smith saved humanity from aliens on the same day two years in a row. First in Independence Day and again the next year in Men in Black.
16Ey7 TIL about Tells, archeological mounds found usually in the ancient near East, "an artificial topographical feature...consisting of the accumulated and stratified debris of a succession of consecutive settlements at the same site"
69nPw TIL that the force that is applied when you push objects is electromagnetic.
JY181 Did you wake up today with a craving for clay, or dirt? That’s called pica, an abnormal craving for substances other than typical food. If you went ahead and acted on your impulse, it's probably a good idea to head over to your doctor’s office. Research indicates that in most cases this craving is a result of a mineral or vitamin deficiency. This brings us to this week’s Today I Learned, as National Geographic Society grantee and ornithologist Luke Powell explains why macaws regularly munch on South American rain forest clay. Yummy! All animals (including humans) need salt to live. Animals that live in the Amazon rain forest face a curious predicament due to the way the Andes mountain range affects weather coming from the Pacific Ocean. This geography results in an extreme lack of salt in the Amazon and, consequentially, some unique behaviors and appetites.EDITOR: Laurence AlexanderSERIES PRODUCER: Chris Mattle