Water shortages, global warming to hit grain supply

Water shortages and global warming will hit grain production and push up prices in the coming years, leading to unrest in countries unable to afford imports, the head of a leading think-tank said on Thursday.

Shortages of water due to rising population, added to the effects of global warming, will hit wheat, rice and maize supply, pushing up prices and leaving poor countries with no means to meet growing demand for food.