Food shortage has been becoming a critical world issue over the past few decades. I disagree that food scarcities will be exterminated in the future.
First reason lies in population growth. Escalating world population will not meet demand for food even though agricultural productivity has increased for years. Moreover, population growth remains rapid in many developing countries, where they has already been threatened by food crisis.
Secondly, climate change would be aggregate the situation. Increasing temperatures and declining precipitation over semiarid regions is likely to reduce yields for primary crops. In a way, switching to alternative energy presupposes the idea of cutting down on food supply for human beings. These changes could have a substantial impact on global food security. In addition, demand for biofuel,which is made by corns and other key crops, is increasing to deal with global warming. Thus, these structural changes are also reducing food availabilities.
Finally, globalization transforms husbandry production systems. Farmers opt not to cultivate crop and opt to produce to plant nonessential grocery items such as coffee to meet the demand for developed countries out of concern for finance. Furthermore economic development in some emergent nations forces farmers in poor areas to plant crops not for themselves' but for livestocks to market in other developing countries. Therefore, these ironically make food crunch.
In conclusion, I believe that we will struggle with food insufficiency. However, there are some solution to ameliorate this problem. It is crucial for governments to act immediately not to worsen the situation.