Post-it Notes were invented in 1968 by a chemist named Spencer Silver trying to develop a super-strong aerospace adhesive — and the weak glue he accidentally produced instead sat unused for six years until a colleague named Art Fry needed something to anchor the bookmarks in his church hymnal

The man who invented the adhesive that holds together approximately 50 billion office notes per year spent six years walking around the 3M corporate campus carrying samples of his own discovery, looking for anyone — anyone at all — willing to find a commercial use for it. The compound itself was, by every chemical metric [...] The post Post-it Notes were invented in 1968 by a chemist named Spencer Silver trying to develop a super-strong aerospace adhesive — and the weak glue he accidentally prod