We're chewing over the topic of food footprints: How green is your lunchbox? What's the environmental impact of your weekly food shop? Plus, in the news, the prosthetic hand that has allowed an amputee to feel for the first time, a new fatal strain of flu has been identified in a patient in China and Gaia's goal is to create the most accurate map yet of the Milky Way. Like this podcast? Please help us by supporting the Naked Scientists