¡§The United Nations projects that the global population, currently at 6 billion, will peak at about 10 billion in the next century and then stabilize or even decline.¡(popindex.Princeton.edu) A question immediately following the statement, can the Earth feed that many people? It is understood that even if food crops increase sufficiently, other renewable resources, including many fisheries and forests, are already under pressure. ¡§Our food production doubled from 1961 to 1994, but there are still people who go hungry.¡ (popindex.Princeton.edu) This is because the human population has increased more rapidly than the food production. One of the well-known economists Thomas Robert Malthus claimed that there was an imbalance between population growth and our ability to produce food. In his famous work, An Essay on the Principle of Population, his principle of population was based on three main points: population cannot increase without the means of subsistence; population invariable increases when the means of subsistence are available; and the superior power of population cannot be checked without producing misery or vice. When taking into account Malthus¡s principle of population it is evident that his fundamental analysis of population has been proven right.
             Since the earth¡s resources are finite, when human population increases, it affects human beings. Will there be a problem if population keeps increasing? Rapid population growth and the technical development of society have led to difficulties for farmers worldwide to maintain this dual compatibility. In fact, today farmers face demands for a high productivity as well as environmentally sound, sustainable farming practices. Some economists believe human beings have the ability to produce enough food to feed all the people in the world, but according to Malthus¡s theory, this cannot happen. When the number of people keeps increasing while the amount of available ...