Complex sentence: Taylor's academic work began studying ornamental metalwork of the Balkans and western Asia, he has since broadened and he has done extensive work on the archaeology of cannibalism, sexuality and material culture theory.
Split into simpler sentences: Taylor's academic work began studying ornamental metalwork of the Balkans and western Asia. Since, his focus has shifted and he has done extensive work on the archaeology of cannibalism, sexuality and material culture theory.