Presenters Timandra Harkness and Leo Johnson taste some strange foods of the future, as they investigate how technology and a rising global population might transform what we eat. With a predicted two billion extra mouths to feed by 2050 and a rapidly rising obesity problem in many richer countries, the world faces a 21st century food crisis which combines the threats of starvation and ill health from over-eating at the same time. FutureProofing examines possible responses to these twin problems: change in the way food is produced, and change in the way we think about food and its place in our lives, could significantly alter what we eat in the decades to come. Visiting Italy, the programme finds what solutions are on offer at the huge Expo 2015, as countries from across the world present their ideas for the future of food. Producer: Jonathan Brunert.