Charles Spencer @cspencer1508, 9th Earl Spencer, is a British nobleman, peer, historian, journalist, and broadcaster. His new book is entitled To Catch A King: Charles II's Great Escape.
We're always shocked when we see child soldiers in the news. Dan talks to Emma Butcher who has investigated the history of child soldiery, and sheds new light on this phenomenon.
During the First World War, many Chinese came to work as labourers on the Western Front, but their story is rarely told. Dan talks to Wenlang Peng about the impact of the Chinese Labour Corps, and what life was life for them.
Michael Puett is Professor of Chinese History at Harvard and has lectured widely at the world's leading universities. His course in Chinese philosophy is among the most popular at Harvard and in 2013 he was awarded a Harvard College Professorship for excellence in undergraduate teaching.