I don't think we could solve world hunger as a whole, but maybe slowly, by regions we could do it. All countries and nations must unite in helping each other to achieve this goal. But first, we could start on solving hunger in our own countries. The government should allot budget for this instead of creating lots of infrastructures which are no longer needed. Instead, we could help these people who are suffering by sourcing out a mode of business/work for them, shelter and agricultural opportunities to be their source of income and of food too.