› added 6 months ago

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TIL The original iPhone (and even the second-gen 3G) couldn't copy/paste.

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XE4VR TIL British spymaster Sir Mansfield Smith-Cumming, the first head of the MI6 and the inspiration of James Bond's M, started the practice of using semen as invisible ink during WWI. It worked well, until they realised that the letters smelled awful when received.
Yp5p7 TIL if you half an Australian $10 bill, it becomes valued at $5 and is still redeemable.
VMD80 TIL a 90s "Watchmen" movie almost happened where Sam Hamm (Batman) wrote, Joel Silver (Matrix) produced, Terry Gilliam (Monty Python) directed, Arnold Schwarzenegger played Dr. Manhattan, and David Bowie was Rorschach. And the ending would've had Manhattan use his powers to prevent his own creation.
4XNxN TIL Human genome is 3.3Gb in size. HIV virus is only 9.7kb. Largest known virus genome is 2.47Mb (pandoravirus salinus). Largest known vertebrate genome is 130Gb (marbled lungfish). Largest known plant genome is 150Gb (paris japonica). Largest known genome is 670Gb (Amoeboid) but is disputed.
1avD8 TIL Sperm whales are the loudest animal on the planet, sperm whales uses echolocation and vocalization as loud as 236 decibels