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TIL a Venus day is longer than a Venus year

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grLbW TIL that the human body glows in visible light, but the glow is 1,000 times weaker than the human eye can detect. Scientists captured this faint bioluminescence using ultra-sensitive cameras and found that the glow fluctuates throughout the day, peaking in the late afternoon and lowest at night.
XaDD TIL that the reason why redheads are less sensitive to pain medications is because of a single nucleotide polymorphism (SNP) on chromosome 16
yVK1p TIL There's a branch of science called necrobiotics which can turn spider corpses into robots
LQ6YZ TIL that in 2015, a M2 machine gun was returned to an Army depot for refurbishment. It was found to have been the 324th M2 made, and that it had been in service since 1921.
OZKa TIL there is a software house which still develops games for Commodore 64, ZX81 etc.