One of the main goals of the CaSTL center is to explore chemistry at the space-time limit. Researchers in the center have developed many new and exciting experimental techniques that produce rich chemical information. The Schatz group has been working to connect theory with CaSTL experiments using a variety of analytic, electronic structure, and electrodynamic theories. In this talk we will describe our recent advances in understanding and predicting experimental observations from a variety of experiments: plasmonically-enhanced coherent Raman scattering (PECRS), two photon photoemission (2PPE) spectroscopy, and surface-enhanced Raman scattering of plasmonic chemistry targets. All of the theoretical work discussed is inspired and motivated by the central goal of watching chemistry at the space-time limit as targeted by our center’s experimental colleagues.