The head of one of the world's biggest fertiliser manufacturers has warned that the continued closure of the Strait of Hormuz - as a result of the war on Iran - could cost the world up to ten billion meals a week. Svein Holsether, who runs Yara, said farmers in the poorest countries would be hit first by the interruption to production and supply caused by the ongoing hostilities. We hear from two countries particularly affected by the shortage in industrial fertiliser.

Also in the programme: despair then relief for the Oscar winner who thought an airline had lost his award; and for the first time the nose of a mouse has been mapped showing us more about the way mammals smell.

(Photo: Farmers in Aceh labour amid possible fertilizer shortage due to war in Middle East. Indonesia, 28 March 2026. Credit 2026 Shutterstock Editorial. EPA/Shutterstock )