  New studies of hadronic event shape observables in e+ e- collisions between
13 and 183 GeV CM energy have enabled the running of alpha_s to be confirmed
and the validity of non-perturbative power-law corrections to be investigated.
A more precise value of alpha_s(M_Z) with reduced theoretical errors has been
reported from fitting 18 oriented event shape distributions measured in one
experiment at the Z.
