40 countries face food shortages worldwide

What i read in the story about food shortages around 40 countries. I read that the food is pretty much effecting most of the countries like in Africa, Angola, and the Congo Republic and some other places in the world. What i also read in the story was that food shortages is not really effecting in the world was in the U.S and Europe. the causes of the food shortages i think is because of the global warming all the wheat's they don't grow that fast like how it was back in the days.