Contents: (1) Introduction. (2) Models of CME origin. (3) Observations of the CME: Phenomenological description. Empirical density distributions. Kinematics. CME frequency. Fringes of the CME. CME precursors. Observing the finish of a CME. (4) CMEs related to other solar phenomena: The active Sun and CMEs. CMEs and large-scale magnetic fields. (5) Association with interplanetary phenomena: Prompt proton events. Galactic cosmic-ray modulation. Noncompressive density enhancements. Mass and energy comparisons to interplanetary shocks. CMEs from the nearest star. (6) Perspectives.