Drought is pushing tens of millions of people to the edge of starvation around the world, in a foretaste of a global crisis that is rapidly deepening with climate breakdown.

More than 90 million people in eastern and southern Africa are facing extreme hunger after record-breaking drought across many areas, ensuing widespread crop failures and the death of livestock. In Somalia, a quarter of the population is now edging towards starvation, and at least a million people have been displaced.