The glue on spider webs is extremely sticky. Just ask a fly.

A team at University of Wyoming has isolated two genes responsible for producing the proteins that make spider glue so sticky. From Gizmag:

Supported by the National Science Foundation, a team led by Omer Choresh from the University of Wyoming has in fact recently reported on an extensive study involving the DNA sequencing of the orb-weaving spiders Nephila clavipes andAraneus gemmoides. The group identified two sophisticated proteins that have evolved over millions of years and are believed to be responsible for the glue’s strength.

The plan now is to stick the genes into bacteria that will then spit out spider-web glue in quantity. The glue could be a valuable alternative to surgical glues or Elmer’s.

Link to Gizmag article