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TIL that horseshoe crabs have blue blood which has the ability to respond to bacteria in a way like no other creature on Earth.

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Lr6Q TIL that when Romania made their ice hockey World Championship debut in 1931, they lost 0-15 to the US. Their captain approached the referee after the game and asked him to write a message on the official game sheet: ”Thank you for playing against us, we have learned a great deal from this game”.
epyok TIL about Marjorie Rice, a self-taught mathematician who, in the 1970s, discovered four new types of tessellating pentagons (figures able to pave a surface without leaving a void between them)
O4KL TIL The World’s Oceans Contain Over 20 Million Tonnes of Gold
XEAXj TIL that babies are color blind when they are born. Color vision begins to develop within a week after birth, and they reach adult levels of visual acuity at about 4-5 years.
N7nPJ TIL Dew Point, and not humidity, is a much more accurate predictor of how "comfortable" the outside environment will feel.