  We present preliminary results of several analyses searching for the effects
of CP violation and mixing in the decay of D0 mesons. We find no evidence of CP
asymmetry in five different two-body decay modes of the D0 to pairs of light
pseudo-scalar mesons: A_CP(K+ K-) = (+0.05 +- 2.18 +- 0.84)%, A_CP(pi+ pi-) =
(+2.0 +- 3.2 +- 0.8)%, A_CP(K0_S pi0) = (+0.1 +- 1.3)%, A_CP(pi0 pi0) = (+0.1
+- 4.8)% and A_CP(K0_S K0_S) = (-23 +- 19)%. We present the first measurement
of the rate of wrong-sign D0 -> K+ pi- pi0 decay: R_WS = 0.0043 + 0.0011 -
0.0010 +- 0.0007. Finally, we describe a measurement of the mixing parameter
y_CP= Delta Gamma / (2 Gamma) by searching for a lifetime difference between
the CP neutral K+ pi- final state and the CP even K+K- and pi+pi- final states.
Under the assumption that CP is conserved we find y_CP = -0.011 +- 0.025 +-
0.014.
