sciencemag.org

J18L1 TIL in 1815 B.C. it took about a year for Sumerian scribes to learn how to multiply. They also signed and dated their homework.
6Ek0X TIL: Cats rival dogs on many tests of social smarts, but very few scientists have the patience to try and study them
rRgky TIL: Kangaroos, known for their 2 footed hopping motion, also use Pentapedal, 5 footed, motion when grazing. the 5th foot being the tail.