› added 11 months ago

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TIL that ancient Romans used urine to clean their clothes because the ammonia in urine acted as a natural detergent

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vjQL TIL there’s a experimental project in Stockholm, Sweden where you can sign up to recieve a SMS if there is a cardiac arrest nearby (500 m), so you can get there before the ambulance and perform CPR. 9500 people have signed up, and they reach the location faster in 54% of the cases.
X1Xk TIL if you write any number in words (English), count the number of letters, write this new number in words and so on, you’ll end with number 4
Me6mm TIL That foaming hand soap has been found to be less effective than regular liquid hand soap at removing bacteria
O4ML TIL the ‘Yin and Yang’ symbol was actually a shield design from the late Roman Army, and predates Taoist representations by almost 700 years
XErR6 TIL the US Bureau of Land Management only allows 20 people per day to visit The Wave rock formation in Arizona and you have to apply 4 months in advance for a permit.