Pesticides are one method by which corn earworm populations are controlled; however, since they have been widely used, the insects have become resistant to many pesticides.
The episode refers to the earworm as a physical creature that enters one's head upon listening to a catchy song.
Corn earworm moths regularly migrate from southern regions to northern regions depending on winter conditions.
Phrases used to describe an earworm include "musical imagery repetition", "involuntary musical imagery", and "stuck song syndrome".
As recently as 2005, researchers discovered that the earworm is engraved in the auditory cortex and instantly retrieved.
Earworm was asked again to make another mashup in 2012.
The corn earworm feeds on every part of corn, including the kernels.
