At http://www.spacedaily.com/reports/Scientists_Shed_Light_on_Riddle_of_Sun… … is a report on a paper in Nature on CMEs.
At www.livescience.com/23586-solar-system-planet-formation-shockwaves.html … (see also www.space.com) – our solar system's planets may have formed at different times, determined by shockwaves flowing from a young Sun.