› added 6 years ago

92

TIL that the physical shape of the human ear selectively filters out frequencies outside of the human vocal range.

Read more wikipedia.org

via reddit.com

pPVZ Til the correct term for my relationship with my wife’s sister’s husband is co-brother in-law. He’s my co-bro.
7Kvr TIL on September 11th, 2001 when the US Airspace was shutdown following the attacks, Canada took in 255 flights bound for the USA making this known as Operation Yellow Ribbon. There were over 30,000 people on all 200 flights. Many Canadians hosted the passengers at home for several days.
gMRw8 TIL about Kevinism in Germany. BThe word describes the fact that, for example, when a child is called "Kevin" or "Chantal", teachers believe that this child comes from an educationally disadvantaged home. The increase form "Alpha-Kevin" describes a teenager who is ignorant but also very stupid.
N7BJE TIL that Ben Franklin and John Adams shared a bed during a diplomatic trip and spent several hours bickering about whether to keep the window open or closed.
0dQeA TIL the human heart can be unfolded