Complex sentence: Working at the 2nd Physics Institute at the University of Cologne ("Universität zu Köln ") in Germany, he has been conducting experiments that purport to show that under certain conditions, particles may travel faster than the speed of light ("c").
Split into simpler sentences: Working at the 2nd Physics Institute at the University of Cologne ("Universität zu Köln ") in Germany. Recently he has been conducting experiments that purport to show that under certain conditions, particles may travel faster than the speed of light ("c").