  The measured value of A_b, the Z \bar bb asymmetry parameter, disagrees with
the Standard Model at 99% confidence level. If genuine the discrepancy could
indicate new interactions unique to third generation quarks, implying enhanced
Z penguin amplitudes. Enhanced rates are predicted for rare K and B decays,
such as K^{+} --> pi^{+}\bar nu nu, K_{L} --> pi^{0}\bar nu nu, B --> X_{s}\bar
nu nu, and B_{s} --> \bar mu mu. Measurements of epsilon^{\prime}/epsilon then
imply QCD penguin amplitudes must also be similarly enhanced. The Higgs sector
of an SU(2)_L x SU(2)_R gauge theory has some of the features needed to explain
these phenomena and would also imply right-handed penguin amplitudes.
