› added 5 years ago

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TIL that Series 2 of the British sitcom Dad's Army has three episodes and two Christmas specials missing. This was because the BBC wiped them and reused the video tape to save money and storage.

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BgvAy TIL that in 1980, Lee Kuan Yew, Prime Minister of Singapore warned Australia it was on track to become the ‘poor white trash of Asia’ if it didn’t open up its economy. Australia did open its economy, thrived, and has very close and friendly relations with Singapore.
Wk1X TIL before the Hubble Space Telescope was launched scientists were convinced the Universe was no longer expanding. Not only is the Universe still expanding but at a rate of 74 kilometers (48 miles) per second.
rRv91 TIL The reason Roman structures survive so long is because they used volcanic ash in their concrete, which slowly transforms to aluminum tobermorite when exposed to sea water. Something modern scientists have been trying to do for decades.
M1gK TIL The firemen that went up on Chernobyl’s roof almost instantly received a fatal radiation dose when they looked down into the reactor to extinguish the flames. A scientist later observed their hoses dangling above the reactor, the firemen not there anymore. None were ever seen again.
jNxBX TIL the reason that men’s testicles are not internal organs like female ovaries is because sperm cannot survive at our internal body temperature. They require a lower temperature which is why they hang down, but also why the scrotum shrivels up when it is too cold.