› added 9 years ago

170

TIL Genghis Khan fathered over a thousand children, and because of that 1 in 200 men (0.5%) today are direct descendants of his.

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9wygQ TIL that Earth orbits where the Sun currently is in real-time, not where it was 8 minutes ago - even though gravity propagates at light speed. Newtonian gravitation does not work unless it is assumed to be instantaneous.
Gxl5 TIL: Redheads can’t absorb sufficient Vitamin D due to low concentrations of eumelanin in their body so instead their body can cleverly produce their own Vitamin D when exposed to low light conditions.
XE8aD TIL about Nasal Cycling; the unconscious, natural partial congestion and decongestion of the nasal cavities resulting in greater airflow through one nostril--periodically alternating between the left/right nostrils every 1-3 hours.
Doaj TIL that the CIA hired a magician to train agents in sleight of hand techniques for use in their mickey-slipping LSD experiments…
Pb9J TIL It takes over 1,000 years in man hours to construct a single Virginia class nuclear submarine