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TIL bull sharks can thrive in freshwater environments like Lake Nicaragua, where they can swim 120 miles up and down the San Juan River like salmon.

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GAlEJ TIL Shrapnel is named after its inventor; Henry Shrapnel
M7y5b TIL the map of Juan de la Cosa, created around the year 1500, is the oldest known map to show America and was unknown until its discovery in 1832 by map enthusiast Charles Walckenaer in a Paris bookshop.
dD559 TIL Malcolm X, while serving a prison sentence in his early 20s, spent his time reading the dictionary and copying its pages to improve his vocabulary. This practice not only expanded his knowledge but also transformed him into one of the most articulate civil rights leaders.
epyD4 TIL Redwood trees have no taproots. Their roots grow only 10 to 13 feet vertically, and then spread horizontally for 60 to 80 feet, intertwining with the roots of other redwoods in a grove for stability.
nekwW TIL that in New Zealand, a species of fungus gnats known as Arachnocampa luminos exists, that spins silk nests on cave ceilings, and when prey is entangled in a snare, the larva pulls it up by ingesting the snare, and starts feeding on the prey alive.