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TIL you can tell if a baby is self-aware by drawing a red dot on his/her forehead in front of a mirror

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JYMDV TIL that over 25% of irrigated land in the US uses groundwater from the Ogallala Aquifer. Since large-scale agricultural extraction began in 1950, its size has been reduced by nearly 10%. Once depleted, it will take 6,000 years for the aquifer to replenish.
9dam TIL The guy who sang “She Blinded Me With Science” believes the Earth is flat.
10D7 TIL Connect Four is a solved game. The first player can always win by playing the right moves.
8aBeV There are a handful of people who are born into this world without fingerprints. The technical term for the condition is adermatoglyphia, dubbed 'immigration delay disease,' and for years, it wasn't known what caused the phenomenon. A couple of years ago, dermatologists found that the disease was related to a genetic mutation.
5YQ8k TIL that despite being 99% of the actual mass of an atom, the nucleus is very small. So small that it can be compared to a pea in the middle of a racetrack, or a fly in the middle of a cathedral