TIL, old books have a particular smell due to lignin being present in the paper. Lignin is related to vanillin, leading them to have a faint vanilla scent. March 19, 2020 Read more Share Get link Facebook X Pinterest Email Other Apps Labels TIL Share Get link Facebook X Pinterest Email Other Apps Comments
Twitter says it will label misleading coronavirus tweets — even if they're from Trump May 11, 2020 Read more Read more
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