%0 Journal Article %T Baryogenesis at the Electroweak Scale and Above %A H. Aoki %J Physics %D 1997 %I arXiv %X We consider origins of the baryon asymmetry which we observe today. We review the progress of electroweak-scale baryogenesis, and show a new mechanism, string-scale baryogenesis. %U http://arxiv.org/abs/hep-ph/9708376v2