  The predicted quenching of jets in A+A at RHIC energies has been discovered
by STAR and PHENIX in preliminary data reported at this conference. We apply
the GLV theory of QCD radiative energy loss to estimate the opacity,
L/\lambda_g, of the gluon plasma produced in Au+Au collisions at 130 AGeV. We
show that (in contrast to the factor of two Cronin enhancement of \pi^0 found
at the SPS by WA98) the factor of 5-8 suppression of p_T \sim 2-4 GeV \pi^0
reported by PHENIX can be accounted for with an effective static plasma opacity
L/\lambda_g \approx 3-4.
