Solar cooking workshop: 24 participants built parabolic cookers from cardboard and aluminium foil. Boiled water in 18 minutes, cooked rice in 35 minutes, zero fuel. In regions with 300+ sunny days per year, solar cooking could eliminate the 4 million annual deaths from indoor wood smoke. The barrier is not technical. It is social infrastructure and behaviour. #SolarCooking #CleanCooking #EnergyAccess