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Post-it notes grew out of what failed experiment?
Confirmed
An attempt at a super-strong glue
3M chemist Spencer Silver made a weak, reusable adhesive in 1968. Colleague Art Fry later used it for bookmarks.
What natural object inspired Velcro?How was Teflon discovered?What accident led Alexander Fleming to discover penicillin in 1928?A melted candy bar in an engineer's pocket helped lead to which kitchen appliance?What did Wilhelm Röntgen discover in 1895, and whose hand was in the first medical image?What made Marie Curie unique among Nobel winners?