E1342 - The Surprising History of Post-Its

3M scientist Spencer Silver created the adhesive that makes Post-It Notes sticky back in 1968 - but it wasn’t until 6th April, 1980 that the stationery product we all know and love was first released to consumers, in a promotional effort the company termed ‘The Boiasie Blitz’.

The problem? His "invention" wasn’t what his company wanted. Rather than strong, industrial-grade glue, Silver had accidentally made the opposite—an adhesive that was weirdly weak but could be stuck and removed multiple times. A "solution without a problem," as he put it.

Fast forward to 1974, and fellow 3M scientis...