Global Population

Introduction

The world has experienced a tremendous increase in population especially in the twentieth century. Comparing the world populations in 1990 (5,278,639,7890) to that of 2000 (6,082,966,429) gives a statistical evidence that there is a drastic increase in population size (Lutz, Sanderson, & Ŝerbov, 2004). In 2011 the world population reached 7 billion but the landscape is still constant at 510,072,000 square kilometre (Layard, Nickell, & Jackman, 2005). This raises a concern on how the world will solve the problems resulting from increasing population and ensure sustainability

Problems caused by increasing population in the globe

Social problems

Scarcity of land space in the world coupled with the increasing demand of housing as a result of the increasing number of young adult population has exerted a lot of pressure on housing (Castro, Adinolfi, Capitanio, Falco and Mambro, 2012). The high demand has resulted to increase in prices of the available houses the consequence of which may lead to inflation. Development of slums in third world countries is another consequence of expensive housing. Transportation vessels in the world are reported to be congested with buses, trains and planes carrying double the number they used to carry 5 years ago (Docherty & Shaw, 2011). Overpopulation especially in cities of the world has posed challenges for the respective governments to provide quality life to the predominant population including providing efficient, low carbon mobility in the face of global changes such as global warming and scarcity of resources (Castro, Adinolfi, Capitanio, Falco and Mambr, 2012).

The increased population in the world has led to shrinking in environmental space; the world has a small surface area 510 million square kilometers of land and inland water translating to less than a hectare each (McLean, 2008). The population growth has exerted pressure on the small land to absorb the environmental impact of all its consumption...