› added 3 days ago

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TIL that dogs are capable of expressing laughter, and the sound of this laughter can serve to alleviate anxiety in dog shelters.

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QNlrL TIL about the International Affective Picture System (IAPS), a large set of photos with subjects from the mundane (a basket or someone at the beach) to the provocative (burn victims or erotic nudes) used by researchers to elicit and study various emotional responses.
P1OEg TIL in 2022 China experienced its first drop in population since 1961. It had a record low birth rate of 6.77 births per 1,000 while also recording its highest death rate since 1976: 7.37 deaths per 1,000 people.
VZQD TIL that there is a ritual in Malawi called Sexual Cleansing which involves young girls after their first mensuration cycle to have sex with a community chosen man in order to get accepted by the community. This also is the reason of high HIV/AIDS rate there.
E1RAP TIL that Ultrasuede (a form of synthetic suede) is partly made from molasses
xXw7 TIL The “magic number” of people needed to create a viable population for multi-generational space travel has been calculated to about the size of a small village - 160.