Ireland's great famine was the worst peacetime disaster in 19th century Europe. It shaped both Ireland and the world. And it remains such a political bombshell that people still can't agree on what to call it. We explore the hidden history of the mass starvation, from its little-known role in the origins of modern journalism to its surprising link to a Native American tribe. Tim discovers a piece of 1840s Ireland in the middle of Manhattan, while Naomi asks what lessons should be applied to current events today.