New research led by the University of Washington looks at what climate change will mean for global yields of corn, or maize — the most widely grown crop in the world. Used in food, cooking oil, industrialized foods, livestock feed and even automobile fuel, the crop is one that all people, rich and poor, reply upon. Published June 11 in the Proceedings of the National Academy of Sciences, the results show that warmer temperatures by the end of this century will reduce yields throughout the world, confirming previous research.