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TIL that tattoos among sailors became popular in order to help Americans prove their ID to avoid impressment into the Royal Navy. They also helped to identify bodies lost at sea.

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1aeLW TIL that biologists are still yet to confirm how baby eels are made. Much of their lifecycle has many questions. The general consensus is that adult eels migrate to the Sargasso Sea to spawn offspring, but only one adult eel has ever been found in open waters. Nobody has seen two eels mate.
rNNAw TIL Dromedary Camels are a completely domesticated species, having gone extinct in the wild over 2,000 years ago. Any that live outside captivity, such as those in Australia, are ferals descended from pack/farm animals brought in by people.
grXWy TIL beef cattle are fed chicken poop because it's a good source of protein
b9Pb7 TIL: The word "Antifragile"—it describes systems that increase in capability to thrive as a result of stressors, shocks, volatility, noise, mistakes, faults, attacks, or failures; fundamentally different from resiliency (recovering from failure) and robustness (resisting failure).
rNA94 TIL that average colour of the universe is called 'cosmic latte'. It was found in 2002 by surveying over 200k galaxies by astronomers and they created a polls on NPR and BBC to come up with a name for the colour. Some of the unchosen names were: Big Bang Beige, Skyvory, and Primordial Clam Chowder.