  We find that current Cosmic Microwave Background (CMB) anisotropy data
strongly constrain the mean spatial curvature of the Universe to be near zero,
or, equivalently, the total energy density to be near critical-as predicted by
inflation. This result is robust to editing of data sets, and variation of
other cosmological parameters (totaling seven, including a cosmological
constant). Other lines of argument indicate that the energy density of
non-relativistic matter is much less than critical. Together, these results are
evidence, independent of supernovae data, for dark energy in the Universe.
