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TIL that the first heartbeat in zebrafish embryos begins abruptly and in sync across all heart cells, a process likened to an army starting to march in perfect unison without prior practice.

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e8AJ TIL of surrealist poet Robert Desnos who started reading palms of fellow prisoners on their way to the Nazi gas chambers. His excitement was so contagious as he predicted longevity, more children, and abundant joy that the guards were unable to go through with the executions.
awY1o TIL that crocodile blood can cure HIV and the antibiotic resistant bacteria 'MRSA'.
lowK1 TIL that Wayne Gretzky is the only Hockey player to have scored over 200 points in a season, and did so a total of four times. His stunning success as a Hockey player was immortalized in the fact that not only did is own team retire 99, Gretzky's Jersey number, but the league as whole did as well!
bKBE TIL Johnny Cash took only three voice lessons in his childhood before his teacher, enthralled with Cash’s unique singing style, advised him to stop taking lessons and to never deviate from his natural voice.
KOBvE TIL: Potato bugs are legitimately called "Jerusalem Crickets" but despite their common names, these insects are neither true crickets nor true bugs, nor are they native to Jerusalem.