The electron is expected to have an electric dipole moment (d_e), though it has so far eluded experimental observation. While the Standard Model's prediction for d_e is still far beyond any foreseeable experiment, new physical theories (especially Supersymmetry) predict values for d_e that are near the experimental
upper limit. The ACME Collaboration recently performed a search for d_e via a precision spin precession measurement in a beam of polar ThO molecules. Our measurement did not see any evidence
for a non-zero d_e, but we did set the limit |d_e| < 8.7*10^-29 e*cm. This represents an order of magnitude improvement over the previous best limit, and places tighter restrictions on new physics beyond the Standard Model.