Why do new sneakers squeak and how to stop it?

[nst.john]

I just got a new pair of sneakers and they've reached the dreaded "squeaking stage", it's loud, annoying and I feel stupid in public with them squeaking so loud. I was wondering though, why do these new sneakers squeak, and is there a way to not make them squeak anymore?

 

[Simon Bridge]

They squeak, usually, from air being squeezed between two surfaces as you walk, or from two surfaces rubbing together like when you scuff across a polished floor - find the surfaces that squeak and you'll have your solution.

http://www.wikihow.com/Stop-Your-Shoes-from-Squeaking

 

[CWatters]

See also tips on youtube. Removing the insole and applying baby powder seem to be one of the top suggestions.