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TIL: The whole world is connected with undersea fiber optic cables (man-made)

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via reddit.com

69doZ TIL that it was calculated that it would have taken the concrete for the Hoover Dam 125 years to cool if it was poured as one continuous pour. Instead giant concrete blocks in columns were poured and then cooled by a series of internally contained pipes of cold water, greatly reducing cooling time.
7dex TIL there’s an annual festival for goths at Disneyland. It’s called “Bats Day at the Fun Park.”
oNRE TIL Minecraft is partnering with UN Habitat to offer kids the chance to design changes they would like to see in their environment.
YxJP TIL that a neutron star is so dense that if an object was dropped from one meter above the star’s surface, it would hit the surface at a speed of 7.2 million km per hour
awwgZ TIL In 2017, a woman called Chau Smith ran 7 marathons in 7 consecutive days on 7 continents in celebration of her 70th birthday.