› added 8 years ago

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TIL: UNTIL 2013, THE US NAVY SENT MESSAGES IN ALL CAPS

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ZpylB TIL African wild dogs use sneezes to cast their vote on whether they are ready to begin a hunt. Researchers noted a minimum number of sneezes required to rally the group, with sneezes from dominant individuals worth more than other dogs.
d8oeZ TIL that Japan planned to order the US to give them Washington state as part of a list of official victory demands upon winning WWII, which many at the time considered highly likely.
GgBQ TIL Chlorine trifluoride is a substance so flammable that an accident resulted in 900 kg burning straight through a foot of concrete and three feet of gravel. Cloth, wood, water, sand, and asbestos all make it burst into flames. The only way to stop it is to wait for it to burn itself out.
VMX48 TIL that humans are the only mammals with a very distinct and visible iris and pupil in contrast with the rest of the eye (sclera) which is white, probably because we evolved as more cooperative animals so following another person's gaze became important in communications.
R7dpj TIL the first street fight caught on camera was in Halifax, England - 1901