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TIL that expectant fathers experience hormonal changes as well. Testosterone and estradiol are lowered.

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RDe7 TIL Grizzly bears have a better sense of smell than a hound dog and can detect food from miles away.
XEEXQ TIL While in Vietnam, 20 percent of US servicemen became addicted to heroin. Only around 7 percent used heroin after returning to the U.S. and only about 1-2 percent had a relapse, even briefly, into addiction
oBrL8 TIL Oxford University, established in 1096AD, is older than the Aztec Civilization which emerged around 1325AD.
NXdV8 TIL that in 2017 the Bison became the first national mammal for the United States
jkGQ TIL scientists have found that the perception of time varies as a function of mass & metabolic rate across species. Smaller animals w/ faster metabolisms can respond to visual stimuli at a faster rate b/c they perceive movements & events to unfold more slowly (like bullet dodging in the Matrix).