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TIL a retired American heart and lung surgeon has patented a scuba suit that would allow a human to breathe “liquid air”, like in the movie The Abyss. He has simulated 1000 foot dives with mammals and has decompressed them in less than half a second with no decompression sickness.

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via reddit.com

9wJrX TIL in 1907 Kodak introduced real photo postcards, a service that enabled customers to make postcards from any photo they took. As photos at the time were a luxury for many, RPPC helped allow people to share images from their daily lives with family and friends.
kOJlm TIL a scottish hacker claimed to have hacked into NASA and found them to be airbushing out UFOS of hi-res satellite pics and evidence of an unknown 2nd top secret US military deep space program.
bv80 TIL Jacob Appelbaum, a man who has been repeatedly targeted by US law enforcement agencies for his work with Wikileaks, was once detained by US Customs; they searched him for phones or laptops but found only flash drives with The Bill of Rights encoded in them. They were unable to copy them.
pxye TIL that into the 1950s the most reliable and fastest pregnancy test was to expose female toads to the woman’s urine. If the woman was pregnant, elevated levels of the hormone hCG would cause the toad to develop eggs within 24 hours.
D1jWp TIL I learned the Metallica bought the rights to the movie "Johnny Got His Gun." This was to use clips of it in their 1988 Song "One" without having to pay copyright to show it.