An M theory Solution to the Hierarchy Problem
  An old idea for explaining the hierarchy is strong gauge dynamics. We show that such dynamics {\it also} stabilises the moduli in $M$ theory compactifications on manifolds of $G_2$-holonomy {\it without} fluxes. This gives stable vacua with softly broken susy, grand unification and a distinctive spectrum of TeV and sub-TeV sparticle masses. 
Bobby Acharya, Konstantin Bobkov, Gordon Kane, Piyush Kumar and Diana   Vaman