Each year the Nobel Week Dialogue focuses on a topical science-related theme and gathers together Nobel Laureates, world leading scientists and experts and opinion leaders for a full day discussion open to the public.
Tristram Stuart is one of the invited speakers this year. He is the founder of Feedback, an award winning environmental charity that campaigns to end food waste at every level of the food system.
"A third of all of the world's food is currently wasted, in rich countries it is even more than that. We waste food at every link in the supply chain," he said.