Li tilthat TIL that in 2013 a scientist injected human brain cells into mouse brain, which improved the mouse's memory and capacity to learn via reddit.com thefingerfuckingfemalefury To stop it from conquering planet they an incompetent weirdo seperate then put two mice same cage so silly will always frustrate terrifying genius plans coffee-without-a-pause I wonder what they're doing tonight athenaiskarthagonensis The thing do every night.