  Quantum Gravity has been so elusive because we have tried to approach it by
two paths which can never meet: standard quantum field theory and general
relativity. The gateway is covariance under the complexified Clifford algebra
of our space-time manifold M, and its spinor representations, which Sachs
dubbed the Einstein group, E. On the microscopic scale, quantum gravity appears
as the statistical mechanics of the null zig-zag rays of spinor fields in
imaginary time T. Our unified field/particle action L_g also contains new
couplings of gravitomagnetic fields to strong fields and weak potentials. These
predict new physical phenomena: Axial jets of nuclear decay products emitted
with left helicity along the axis of a massive, spinning body.
