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TIL nematodes have no motile cilia and no flagella at all. Their spermatozoids move through ameboid motion.

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OGaB4 TIL Epigenetics is the study of how your behaviors and environment can cause changes that affect the way your genes work. Unlike genetic changes, epigenetic changes are reversible and do not change your DNA sequence. Epigenetic changes affect gene expression to turn genes “on” and “off.”
WjGL TIL that in a 1888, Friedrich Engels wrote that Germany’s next war will be a world war, “eight to ten million soldiers will massacre one another” and “the devastations of the Thirty Years’ War” will be “compressed into three or four years, and spread over the whole Continent.”
68NX TIL When a squirrel feels it is being watched it may deceptively pretend to bury an object then hide the object in its mouth
GAZmE TIL that the song "Rap God" by Eminem has the world record for highest amount of words in one song, at 4.28 words per second.
aw8By It might surprise you that some of the world’s deadliest animals save millions of human lives—one day they might even save yours. In this week’s Today I Learned, National Geographic Emerging Explorer Zoltan Takacs reveals how venomous creatures could be the future of pharmacology.