› added 7 years ago

232

TIL that despite early claims that fidget spinners could be used to help children with ADHD, there never was any scientific research to back this claim.

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YB8v TIL All blue eyed people can be traced back to one person who lived near the Black Sea 10,000 years ago.
R7nx7 TIL An average house fly lives for about a month. A lot longer than the commonly thought 2 or 3 days.
b9O5a TIL that domestic gas is scented with a 'rotten egg smell' so it's easier to detect. Gas itself is odourless.
W1jd TIL: That the phrase “Can’t hold a candle next to (insert name here).” Stems from the fact that apprentices used to be expected to hold the candle so that more experienced workmen were able to see what they were doing. Someone unable even to do that would be of low status indeed.
0d7PA TIL pupil size Is a marker of intelligence