› added 4 years ago

94

TIL that Paris only has one sister city, Rome, as it is seen as the only city worthy of being twinned

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DQgKj TIL the substance that forms the outer shell of plant spores & pollen, Sporopollenin, is one of the thoughest, most stable biopolymers in the world. It's so resistant that it can't be studied using normal enzymes or chemical reagents, and it can stay intact in sediment for +500 million years.
LGjQ TIL Watching fish in a tank lowers blood pressure, promotes relaxation and counters the adverse physiological effects of stress.
R7YZ6 TIL: The man that stopped the tanks in Tiananmen Square walked away without getting hurt.
rprx TIL There is a chemotherapy drug that erases your finger prints as a side effect
9wMbr TIL that Skoda test their car horns 150,000 times for the European car market. For the Indian market the horns are tested 500,000 times due to the increased use of car horns in India. One study carried out at major intersections in Indian cities found that a horn sounds every three seconds.