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TIL that weaver ants (Oecophylla) direct their larvae to produce silk, which is used to bind leaves together to form water resistant nests for the colony.

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dDEaj TIL that AllTrials calls for all past and present clinical trials to be registered and their full methods and summary results be reported
d8ZG7 TIL Ötzi, the european mummy, had 61 tattoos, which are considered to be the oldest tattoos in the world
eMNJ TIL Humans have the ability to see ultraviolet (UV) light, but it is filtered by the eye’s lens. People who have surgery to remove the lens (typically because of cataracts) can see UV light.
nyXr TIL in some of the earliest displays of Stunt Flying, a pilot named Eugène Lefebvre would fly directly at terrified spectators, turning away only at the last second. He is also the first person to die while piloting a powered aircraft.
Me0p7 TIL a contronym is a word that has contradictory meanings. Examples include - Bolt: to secure, or to flee. Bound: restrained, or heading somewhere. Go: to proceed, or to weaken or fail. Consult: to offer advice, or to obtain it.