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TIL a 15 year old boy named Jack Andraka made a program that can detect pancreatic cancer, a general procedure that usually costs about $2,000-$5,000 for just $3.

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5VOBD TIL The very distinctive black and white pattern of Killer Whales (Orcas) serves as a form of camouflage from their prey. Like military airplanes that are colored light on the undersides and dark on top, this color pattern makes the whales less visible from both above and below.
7rwrr TIL the first fully digital film was The Rescuers Down Under
Ae6B TIL of Dunbar’s number, a theory that suggests there is a cognitive limit to how many people one person can maintain a meaningful relationship with. The number he suggests, 150. There are 4 layers to this; your 5 closest friends, 10 “best” friends, 35 “close friends”, and 100 not so close friends.
78kx TIL that the entire Pixar staff had to take a graduate class in Fish Biology before making Finding Nemo.
gr6j8 TIL the BBC payed closely to 1.1 million pounds in restitution and 1.4 million pounds in donations, losing in the process the sole production of the Queen's Royal Christmas Message due to the famous Diana interview, which was obtained under "questionable means".