1. Zooming In On Africa
While domain experts debate the earth's carrying capacity, human presence continues to multiply. The population growth rate has slowed globally, but Africa maintains a steady pace: from 1963 to 2013 the continent inflated its share of the world's population from 9.5% to 15.6%.
That 'bigger stake' has not translated into a flourishing food production industry. Africa has improved its food balance sheets, though not in proportion to its human needs. Export trade value has remarkably declined over the fifty year period as many countries deal with political instability and extreme climate variability. Even so, livestock and agricultural products remain one of the most promising sectors for traditionally agrarian economies.
Environmental concerns should register as a primary alarm in Africa. Since 1963 emissions related to fertilization and cultivation have doubled. Other related indicators should also be considered in future study, including land use, livestock husbandry, pesticide application, industrial processes and waste.