› added 4 years ago

101

TIL some people truly are "born miserable." According to researchers, some people are genetically programmed to be more negative than others due to the levels of a molecule, neuropeptide Y, being lower in their brains than others.

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vPBxL TIL that, why do dogs spin around before they poop? Dogs' pre-poop spin actually have something to do with calibrating themselves in relation to the Earth’s magnetic field, or at least trying to.
0dkkL TIL a “seal” is used between components that move – a “gasket” is used between components that are static
KYr56 TIL of the Coolidge effect, a biological phenomenon seen in animals, whereby males exhibit renewed sexual interest whenever a new female is introduced, even after sex with prior but still available sexual partners.
ORY1 TIL that from 1902-1907, a group of 12 scientists regularly ate dangerous, common food additives that had previously been untested, such as formaldehyde, and documented how they reacted to said additives. They were known as “The Poison Squad,” and helped spur the creation of the FDA.
awk5o TIL that Houston is the only major US city without single-use zoning. Retail, office enterprises, and homes are free to mix as the market demands.