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Some cheeses are luminescent.
(thelemmy.club)
A place for majestic STEMLORD peacocking, as well as memes about the realities of working in a lab.

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As another example, the Cuyahoga River famously caught fire in 1969. That isn't technically the 70s, but I wouldn't have gone near it anytime during that decade.
The cuyahoga was only just declared safe to swim in last year. the bill that led to its eventual cleaning was passed in 1972. it was probably at its absolute nastiest in September of 1972.