Global nutritional need—the energy problem

Abstract

The perceived limits to producing food for a growing global population have been a source of debate and preoccupations for ages. Population increased to 6.9 billion in 2010, up from 2.5 billion in 1950 and 3.7 billion in 1970 and according to the United Nations (UN) could reach 9.15 billion in 2050 (Alexandratos N, Bruinsma J in World agriculture, towards 2030/2050, the 2012 revision. Food and Agriculture Organization of the United Nations, 2012 [1]).