When Thomas Malthus published his essay on population in 1798, it would have been hard for him to imagine the accelerated increase in global population in the last century.
However, his theory connecting population with the land's yield is getting an update.
Al Gini looks at concerns of an increasing population in the modern world and recent findings that suggest our greatest concern is only six inches deep.
Al Gini is a professor of business ethics and chair of the department of management at Loyola University Chicago. He is also the co-founder and associate editor of Business Ethics Quarterly,and the author of several books, including My Job, My Self and Seeking the Truth of Things: Confessions of a (catholic) Philosopher.