There are people in every country who suffer from hunger. Discuss Hunger and try to explain by doing some research why there is hunger in the world?

Is it a food production problem or a distribution problem?

Are prices of food too high that some people cannot afford to eat? 

What other factors may contribute to hunger ? 

Limit to answer to at least 300 (NO more than 350 words). I need at least 2 cited sources of research. NO Plagiarism (use your own words).