Four have won the 2016 World Food Prize. The scientists are from the International Potato Center. They won the for making sweet potatoes . This has for millions of people around the world. The scientists developed sweet potatoes that have amounts of Vitamin A. This means they contain more . One researcher said it was to get farmers to help with his work. The researcher said: "They told me it was a idea." The farmers said their job was to grow more potatoes, kill pests and reduce , not increase nutrition.
The sweet potato could stop people dying from . This is not having to eat. A lack of Vitamin A is very . Scientists say malnutrition affects over 140 million children in 118 countries. It also affects over seven million women. Scientists also say it is a big reason for children becoming . Jan Low, from the International Potato Center, said the prize- sweet potatoes could make a big . Hungry people could get enough Vitamin A. She hopes scientists will grow that have extra nutrition.