Bettany Hughes journeys across Uzbekistan, tracing Alexander the Great's legacy near Termez, exploring Khorezm's Zoroastrian past, and uncovering Sogdian Silk Road treasures.Bettany Hughes journeys across Uzbekistan, tracing Alexander the Great's legacy near Termez, exploring Khorezm's Zoroastrian past, and uncovering Sogdian Silk Road treasures.