› added 1 year ago

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TIL feeling suffocated is caused by excess CO2, not lack of oxygen. Thus carbon monoxide (CO) is a silent killer: it blocks oxygen delivery and you can pass out and die quickly without feeling anything. It can also cause chain fatalities as people see a body, rush to help, and pass out themselves.

Read more ncbi.nlm.nih.gov

via reddit.com

MeXD8 TIL that the Burj Khalifa is so tall that inhabitants above the 80th floor have to wait 2 additional minutes to break their Ramadan fast compared to people on the ground, while people above the 150th floor have to wait an additional 3 minutes.
Eom0 TIL that in 1921 a group of whites burnt the wealthiest black community, in the United States, known as “black wall street”, to ground. Firebombs were dropped from airplanes and hundreds were killed. This massacre was not acknowledged in state history records until 1996.
xJjB TIL a student was arrested for stripping down to his underwear in Richmond International Airport revealing the Fourth Amendment written on his chest. Charges against him have been dropped and law enforcement officers are now required to take a two-hour class on the First and Fourth amendments.
R5nZ6 TIL about the Barnum Effect, a common psychological phenomenon whereby individuals give high accuracy ratings to descriptions of their personality that supposedly are tailored specifically to them, yet are general enough to apply to a wide range of people, such as astrology and personality tests.
wg57 TIL that Shakespeare intentionally made grammatical errors to heighten the attention of his audiences before key points in his plays - the technique is called ‘functional shift’ and the use of it keeps the brain alive!