[en] New observations of Cyg X-3 at radio and x-ray wavelengths are reported. The observations of low-level radio emission from Cyg X-3 show that this emission is characterized by successive flares whose spectral evolution is similar to the giant radio flares observed in Cyg X-3. As with the giant flares, these flares are interpreted to be expanding sources of electron synchrotron radiation. The author finds that the timing of the flare onsets are periodic with a period several percent longer than the binary orbital period. It is suggested that the radio period is the result of periodic modulation of the binary separation. The effect of x-ray scattering by the interstellar medium on the observed x-ray light curve was found to decrease the depth of modulation from its intrinsic value for photon energies less than 6 keV. EXOSAT observations of the x-ray light curve show that the shape of the light curve as well as its depth is dependent on photon energy. Evidence for detections of γ rays and secondary muons from Cyg X-3 was reviewed with negative results. Results show that Cyg X-3 is an important source for the study of binary evolution, accretion disk structure, and the formation and evolution of radio jets