› added 1 year ago

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TIL: that babies are not born with the bacteria that causes cavities (S. mutans) and that the bacteria is transferred from someone else through saliva exchange. Parents who share food, cups, kisses, & lick pacifiers can transfer their bacteria and increase the baby’s chances of developing cavities.

Read more oralhealthgroup.com

via reddit.com

WnWN TIL some slang words and phrases commonly used in the UK today originated 100 years ago in the trenches of WWI.
9w7BG TIL the idiom "Keeping up with the Joneses" came from a comic strip of the same name that ran in U.S. newspapers from 1913-1940. It featured the McGinis family, often struggling to keep up socially and materially with their neighbors, the unseen Joneses.
yVO9X TIL, in film, a clapperboard’s purpose is ensuring proper synchronization of audio and video in post-production. It provides a distinct “clap” along with a visual event for the editor to reference at the start of a scene.
8wxG TIL the suits worn by the Guild members in the movie Dune were old body bags found in a disused fire station. The bags had actually been used several times, something that was kept from the cast members until shooting was complete.
8aoMZ TIL in China, the per capita GDP rose from $89 in 1960 to $10,000 today. The life expectancy rose from 43.7 years in 1960 to nearly 80 years today. The country was producing two new billionaires per week in 2017.