› added 2 weeks ago

4

TIL that the population density of Manhattan is 40% lower now than it was back in 1910, when it reached its peak population of 2.2M, compared to its now-present population of 1.6M.

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5yND TIL that without an FCC ruling, known as the Carterfone decision, we might not have the internet as we know it today. The decision allowed connection of non-AT&T equipment to the phone network.
W7gKA TIL Like many other places in the body, the mouth also has symbiotic bacteria which contribute to oral health. However if there is gum disease leading to the bacteria entering the bloodstream, that can cause heart disease. So Oral Health is linked to Heart Health.
m1Jkp TIL world largest pyramid is partly underground and is in Mexico, Cholula.
R7wbw TIL that the first paramedics were 25 African Americans in Pittsburgh, trained through the Freedom House Enterprises which was a program championed by an activist and the doctor who invented CPR, in 1967.
46DJ TIL Disney once had plans to team up with the makers of Myst for a Myst themed interactive park, Myst Island.