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TIL that two surfaces can be bonded purely by intermolecular forces if both surfaces are smooth and flat enough. This is called optical contact bonding.

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jn5Q TIL Roger Williams, the Father of Separation of Church and State, was devoutly religious and wanted to keep the two separate to protect the Church from the State, not the other way around.
KYWBE Today I learned that only Australians and New Zealanders still say ‘Hip-Hip Hooray’ after singing Happy Birthday.
Abk7 TIL that 62.1% of bankruptcies in the US are due to medical bills. Most medical debtors were well educated and middle class; three quarters had health insurance. Unaffordable medical bills and income shortfalls due to illness were common causes.
W6A8 TIL Punxsutawney Phil performs worse at predicting the weather by his shadow than he would by chance
o4L8 TIL: Doritos and Coca-Cola are scientifically designed to taste alluring, while at the same time STOPS the brain from giving the signal to stop over eating