  We show that a non-quasiparticle charge collective mode, in parallel and
coincident with the d-wave pair conductivity, leads to a quantitative
understanding of microwave surface impedance measurements on superconducting
$Bi_{2}Sr_{2}CaCu_{2}O_{8+\delta}$. The analysis suggests an inhomogeneous
charge ground state in $Bi_{2}Sr_{2}CaCu_{2}O_{8+\delta}$ and other HTS.
