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Grey hairs sometimes regain their colour when we feel less stressed.

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9YVOm TIL in the 1960s, a woman found the head of an axe, a gashed skull, and macabre sketches of murder victims in an iron tub in her attic. It turned out to be the evidence from the Lizzie Borden murder trial- her father had been Lizzie’s lawyer, and she’d given him the evidence after her acquittal.
9wLDX TIL The first deep water submarine rescue occurred in 1939. The submarine USS Sailfish sank off New Hampshire. 33 out of 59 of the crew had survived, trapped in a compartment that had not flooded. A newly developed device called the Mcann Rescue Chamber was used to rescue all the survivors.
grKRA TIL that the B-2 jet used by the US in Yemen costs an average of US$2.13 billion, which is about 10% of Yemen’s GDP
vjkr TIL The two “M’s” in M&Ms represent the names of Forrest E. Mars Sr. (son of candy company Mars, Inc. founder Frank C. Mars) and Bruce Murrie (son of Hershey’s Chocolate president William F. R. Murrie).
4kego TIL Beyoncé is named after her mama's maiden name, which is also Beyoncé