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Used coffee grounds make concrete 30% stronger
(www.livescience.com)
just science related topics. please contribute
note: clickbait sources/headlines aren't liked generally. I've posted crap sources and later deleted or edit to improve after complaints. whoops, sry
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Wow I didn’t know it was a large contributor to greenhouse gasses. Good if it can be reused in concrete and save habitats from sand mining at the same time.