Rarely has one foodstuff had such global influence as Sugar – on our trade and economy, movement of people around the world, and health and treatment of fellow humans. Once a costly luxury called “white gold”, it was pivotal in one of mankind’s most shameful chapters – slavery. Joining Rajan Datar to find out more about Sugar and its connection with power is the Canadian historian Dr Elizabeth Abbott, the writer Marina Budhos whose Indian background inspired her research, and the Columbian political scientist Dr Eduardo Gomez, author of ‘Geopolitics in Health’. Photo: A sugar bowl (Getty Images)