One of my biggest complaints about the old Sticky Notes was the lack of a user interface. Anytime you opened it, the last note you worked on popped up, requiring three extra clicks just to get to ...

A 3M scientist, Dr. Spencer F. Silver, discovered the adhesive on Post-It Notes by accident, but did not have a use for it at first because it was not very sticky. Later, Art Fry, another 3M engineer, ...